How to Draw Open Mouths

hey everyone's acquiescing here and in this tutorial I'm going to show you how to draw open mouths because I said I would a few weeks ago and then I forgot so now I'm going to do all right so I've already covered a bunch of times how to draw mods that are closed and I talked about you know the face shape and you've got the eye sockets and the nose and and the mouth but when it comes to open mouths I make a distinction between two parts of the skull one is the cranium which is this whole top part it includes the upper teeth the eye sockets and the nose basically everything from here the temples everything except the lower jaw is or the jaw it's that's all the the upper part right all this you've got this and then you've got the lower part which is just you know the job and so what happens is it's the lower part that moves now where I think mistakes happen is that the movement of the jaw isn't considered on an arc so when you have this let's just simplify okay so you have this this is just going to be a circle and this is going to be the job it's just this okay for now we're going to simplify it like this and let's say that this is where the ear would be and this is where the I would be now what's happening and actually that jaw is more curved like that but what's happening is this ja hmm just move this make two of them this jaw moves right and what I sometimes see is people treat it more like this with the screaming mouth or an open mouth whatever it is they tend to just lower this and increase this and let's say this is his nose or maybe to her this is her nose and so when it's closed maybe it's just a smile like this and when it's open it's like this but that's not how things work because when you open the mouth what's going to happen is yes this is going to move but it moves in an arc like this ah or rule so like that so now watch you would get this happening where I suppose things to keep in mind are that if you had a straight line going down vertically like this that this is pretty straight when the mouths closed and it doesn't mean that it's straight it just means because of course you've got different shapes you could have a mouth more like this or one that's more like that yeah but it's more like this can still be going straight but then when you open the mouth this chin is going to go inside something else else that happens is the mouth sort of moves forward or the jaw moves forward a bit goes like this way and down but this is pretty negligible so the jaw is actually doing something and more like this and then down Mike goes so this is let's say this is when it's closed it comes a bit forward as it goes down more like that so it's not going to be that severe well it's still pretty severe but it's not going to be like way back here for instance but it's still going to shift this this thing so the chin is further back so you have to keep that in mind the chins going to be further back where I see and this one it's all still lining up so I think that's the big difference or the biggest issue I see is that's number one that because the jaw moves at an angle and it's following an arc with the pivot right here doing this going down like that it's not going to just be that when you open your mouth you can just make it so you've got more space down here doesn't make sense it's got to be that you have more of this angle right okay now there's two other important things one is to remember the cranium so when we draw mouths and let's say okay let's say you understand the draw thing so yeah you're doing the jaw right got the draw coming down whereas normally maybe it would do something like that now let's say it's doing this it's like okay so you've got that and you've got your eye and your nose and you've got this angle coming down right and let's just do because I often see the problems in I mean I see it in more realistic stuff as well but less I mainly see the problems in cartoony or manga styles and what I'll see are like okay so you get this that the mouth is is at an angle like this right because this one like that or the chin went in I'll see this where it's like okay now let's put in the teeth until you put in the teeth and you get something like this and this is wrong as well and the reason it's wrong is because see how the teeth are here if we were to draw this that continue this as if we're drawing the skull because the skull like the head just it's a skull underneath and then you've got muscle and fat and skin on top of it but it's bone underneath what this is saying is that the mouth is doing this like the teeth are doing this they're going at an angle and they're inside this but remember the entire top part of the cranium that doesn't change that's not going to move it can tilt up and down but it's one piece so when I say it can tilt I mean like if you have the draw here the entire head can do this but the individual parts aren't going to change so because of that because we have our nose and we have our top part and this is all fixed the teeth are always going to be normal in the top area right like they're always going to be aligned with the rest of the face the top teeth it's when the jaw opens and it goes down it's a lower teeth that are going to be angled so that's the other thing it's like the lower teeth are angled but the top teeth stay the same so if we're to redo this the more correct thing would be if the teeth were still just behaving normally like this at this angle alright and I'm doing the enemy mouth on the side thing if you wanted it to be more realistic we can do that too with the mouth and you have the teeth still going this way and then you have the lower jaw or the jawsaw right keep get the lower jaw doing this so you'd have a situation more like this where these teeth are at an angle like so but these ones are not they are still aligned as they would be in a closed mouth so that's the second thing and then the last thing is the whole perspective cylinder thing so if you think of it like this how am I going to do this let's say a cylinder okay got a cylinder and right now we see the top of the cylinder right so this means that we are looking down on it right we can look down on the cylinder so our horizon is up here somewhere now if it was more down like we cut this in this world you would see more of that oval right this is smaller this is bigger same things going to happen with the mouth as you tilt the jaw right you're going to see into and this is a side view did that sorry I meant to do it in the front view you've got a front view right and as the jaw goes down like as the mouth opens what's going to happen let's just make this a skull is you're going to get this situation where you see the lower teeth and they're going in because this is another thing I guess there's a few more things to keep in mind you've got to remember that the teeth go inside quite a bit right and so you see inside this mouth and then you the top teeth that don't move but these bottom teeth you have the tongue in here they go inside and just like this thing as the jaw opens more and more we see more into this mic here see we only see this much and then here we see more because this is now moving into perspective like you have to think about the perspective so you have this situation now the mouth the head could also be doing this where is the top part is tilted alright and then it's the bottom part that's doing something like this and in this case or let's say you're looking up at the mouth then it's those top teeth that you would see so in this case if we're looking straight on like our eye is here right this person is pretty troubled being this close to this skull but what we would see is like if we're looking at a front view we would see this head and all this is bent back so you'd see this is the nose this is where the eyes are not going to make them like that but anyway and then this is the mouth and so we would see into the mouth and this part would all be curved right and then you would have maybe this part so the bottom teeth are more straight now and it's a top teeth that we see going inside and then you'd have the tongue so it'd be something more like that so this is because in this situation we would be looking this from my this angle and we're looking towards this person that's a bad placement for this person let's say they are all the way over here and they're looking at that skull right and I guess this is a way of seeing it okay so yeah I've got these horizontal lines right so these are imagine these are all like magic vision lines this horizontal line is sort of like this horizontal line for the jaw so we see that as flat because this is flat this is what but this is hitting all these parts because this is open so we see all that open and something really common that I see is people don't consider this whole roundness to the mouth like because we've been doing it so there's a side view or a front view but neither view really is showing especially with the front view because with the side view sure you can see how deep this mouth goes in but with the front view the problem is if it was a skull we would see it more if we're looking at people and they were just skulls we'd see it more but they're not they've got you know skin on top so we see the lips and the lips tend to be fairly straight across um something like this right so we see this and it makes it hard to see that yes this mouth goes really deep in like all the teeth are going deep inside this this face but the best way I think to see that is just bread right because you get bread can be anything let's just say we have a slice of bread and you take a bite out of it what's going to happen you're going to probably see a shape like this right not just like that but sort of like that like a simplified version like let's say this is a slice of bread something more like that right where it really does go in a lot your teeth go in a lot and then you have your forward teeth and your back teeth so that's really important to keep in mind when you have open mouths because let's just do a three-quarter view and let's say this person's got an open mouth so you know the first thing I do is just like normal you know we've done heads in different angles so I'm not going to cover all that but that's this thing okay everything is the same but now after remember you got your ear your jaws opened so this is going to go down at an angle and then the teeth are going to remain the same on the top view as they would if the mouth was closed and then you're going to see into this mouth but remember you see into it like and out what I like to do is shade this part so you get things like this with this sort of dark triangular shape here this is it something like this you've got that right so remember this these teeth go inside all right so pretty much that's it maybe I can go over some simplification methods real quick so let's say we had like an anime face well the same rules applied now with anime they sometimes do this thing especially in enemy unless and I guess I'm not sure and manga if they do it a lot but they'll do this thing where the jaw actually doesn't open but they'll do faces like this like ah and then when it's closed it's the exact same thing right but even in these phases you've got to consider like treat it as if the job was open and show those inside teeth still following that thing where it's as if we still see more of the bottom of the mouth we still see those teeth curving around so I think this is the way it gets a manga stuff gets away with it and cartoons stuff is that you're not like you're deviating from reality and of course the reason they do this is because it's less work because you don't have to animate as much stuff because like for Western animators if you actually went ahead and you open the jaw as you should or as they do what you have to do is now I have to draw this entire part like all this area I have to redraw but if you're just doing this and you've got an anime um then it's much easier because I can just draw this mouth on its own layer doing its own thing and this guy could be you know having a bunch of different expressions but all this stays the same you don't have to redraw all of this so it's much easier to do lip-sync and then not to mention the mouths just tend to open and shut like bah bah bah bah bah like you'll have like this mouth and then you'll just have this month and they keep changing and so it makes things a lot easier but what I'd like to get at is even like I'm not saying this is wrong as you shouldn't do this or this is so bad what my point is is if you are going to do this if you are going to simplify the character remember that you have to base things off reality and real quick I need to talk about this because invariably it shows up in the comment when I say base it off reality I don't mean you need to learn how to draw photorealism so reality is something we study from and realism is just you know making it look like the thing in reality so for instance let's say let's say this was a photo tree right it's not but let's say it was okay so studying from reality would be like hmm I'm looking at this and okay so that's how the leaves are and whatever and then I could exaggerate it like oh I'm going to make my tree like really crazy and but it still got leaves and it still got a trunk and the trunk still supports it but it's you know it's based off this which would be reality this is reality whereas realism is more like okay I see this tree and I'm going to really try and like nail exactly what this particular tree looks like you know and that's not bad but that's not what's required and I didn't come that close so but let's let's assume I did like that's what realism is this is realism but you still want to learn from it for instance you don't want to so let's say this is your stylized version stylized you don't want to be doing something like let's say you don't look at a tree and you're just guessing and this is going to be dumped because I have to do it an example but I use something like a tree but let's say you're thinking okay so what does a tree look like well you know I think it's got a trunk like this and looks kind of like this and it's kind of like this right like that's a tree and maybe this person didn't study from reality and that doesn't really look like a tree that's not that's not what it looks like so the point is you don't need to do this you don't have to study realism to end up getting a style but you do need to observe reality so you know you look at it and you think okay I'm going to study and the thing is why this does help though the realism thing is because if I'm looking at this and I'm only looking at it I might think I know something I might think like oh yeah well you know it's got a trunk and the trunk like this and then it's got like some fluff over here but I might have gotten the proportions completely wrong whereas when you have to you know really study and try and draw what you you see you have to think like okay well I think it's like this oh wait no the trunks not that long it's actually this long you're spending a lot more time analyzing and you don't mean it's possible that you could just spend more time looking at this you know but it does it is a good exercise to do this so realism isn't bad but it's not necessary and it's definitely not the same thing as when I say you know you need to study from life or you need to study from reality that I mean you must become a photo real expert at drawing you must be one of those people who can just make something look perfectly realistic I'm not saying that but it's not a bad skill to have but really the main point is study from reality don't study you know what you think it is and only that you know because you might be wrong or you might think usually what it is is it's not necessarily that you are wrong in the main things it's that you're missing little details like maybe you really look at a tree and you notice things like oh you know well yeah it has a trunk and it has branches but I didn't notice how you know all the branches sort of split up how or maybe you don't notice you know how thick the trunk is or you don't notice how leaves actually work you don't think you don't consider like oh yeah there's a branch that comes forward as well so I've got to consider things coming towards me things going behind the tree like this branch might be coming from behind and instead you're only focused on what you think a tree is and often when we do this we tend to revert to our childish sim symbol seeing thing where you look at and you think of an eye and instead of really drawing an eye as you see it like maybe the eye looks something like this whatever yeah got an eye maybe it looks more like this or even something crazy like maybe it just looks like like this you can't really see the forms because it's in shadow but instead of this you revert to Oh draw an eye okay here's an eye and here's another eye and here's a mouth and these are symbols right so studying from reality helps you break away from this but no one's saying you've got to study realism so anyway sorry for that rent it's just something I really felt I had to cover because I keep getting the comment of oh do you mean I have to learn how to draw really realistically when all I want to do is draw anime and comics and stuff like no that's not what I'm saying but I am saying it's a good starting point to learn your fundamentals and learn from reality and anatomy and physics and all these things like they're just sciences it's like learning your Sciences so anyway mouths this was about mouths make sure your curving your teeth when your mouth is open and hope this helped and thanks for watching

Channel: Sycra

Views: 213,743

Rating: 4.9765782 out of 5

Keywords: how, to, draw, drawing, mouth, open, mouthes, teeth, smiling, yawning, screaming, yelling, shouting, laughing, jaw, jaws, cranium, face, faces, art, artist, tutorial, tutorials, sycra, yasin

Id: z4qpbhEHIPk

Length: 27min 1sec (1621 seconds)

Published: Wed Jul 15 2015