I don't think there is any easy hack to getting the tilt correct. It's all about the spacing of the facial features and the ear placement. Tilting up puts the top of the ears below the eyebrows, tilting down puts them above. Remember, the human face is one of the most difficult subjects to draw not because of its complexity but because we are all genetically preprogrammed to know exactly how it is supposed to look. Micro changes will look wrong. Watch Stephen Bauman do a portrait demo (a master of portraiture) and even he will get things off on the first pass and need to make adjustments. These look good by the way. Keep at it.

Thanks so much! I am glad to know the main impression seems correct! I feel like I just need to be more precise since it is going into an institution that a lot of people are going to be seeing. I want to try to do my best at it so I don't look back on it with any regrets! I will be painting this in watercolor, which will soften some of the "preciseness" but my experience with watercolor is that if you are trying to paint something with sharp edges, the drawing needs to be extremely tight because a looser drawing seems to compound with wobbliness. I am so excited for Marshall's course but I wish it could be happening now, for sure! Thank you for the lovely comment!

continued with body design combining the gorilla and mountain sheep. It looks a bit like a satyr.

First, thanks for being brave and posting here, especially when drawing from imagination. I don't know if I would be ready to do that myself. I am not an expert here at drawing the anatomy from reference or imagination, but here are my thoughts. I will also refer to your other post as well with the finished drawing. To begin with, your first sketch wasn't too bad for a basic sketch from imagination. You skipped hands and feet because I am guessing you are not confident with those yet. But as you refined the drawing, you pushed the pose further and further until you started to miss the perspective and the anatomy started to look off. My first bit of advice is to try and get in the pose you are trying to draw. I've even take a selfie to see how it looks when I am trying to do this. I think you will find you can't get into the pose you are trying to draw in the final picture. The body doesn't move that way. You could almost copy that first sketch however. As you refined your drawing, the right hip went way up while the legs basically stayed the same. The angle of the calf and heel is out of alignment with the thigh on the left and the whole leg out of alignment with the right glute. As you move up into the torso, there is an extreme twist and you need to make sure that twist is clearly shown. Right now I think the first sketch conveys that twist better than the final which would have an strong pinch on the side in order to twist that way. The difficulty here as described by Stan and other artists here is adding structure to your gesture without losing the gesture. I think your initial gesture had promise and then you tried to refine it and then some perspective and anatomy issues crept in. Try going back to that initial sketch and see if you can keep that gesture and refine the drawing from there. I'm new to this too however, so these are just observations. Other people may have different thoughts.

I think you did a nice job on the gesture, it doesn't feel stiff at all. Now, about the rendering: You are not rendering the forms as 3 dimensional making them look flat. Your making some forms much darker than they are. You are not accounting for light fall off. This is when the forms that are farther from the light, get darker. The body is too light overall. Too much contrast because you don't have enough dark, middle and light halftones. I did a quick diagram and digital painting to show you what I mean, I hope it helps :)

Hey, good job! Something I'd recommend as you progress into your studies is to not only think about the gesture and the shapes you observe on the page, but think about the subject as it takes up space. The shadow below the model indicates the plane she is up against, and this (the floor) visibly pushes against her feet and her bottom. This causes a visible compression that you could exaggerate to make her feel even more believable as a 3D form with weight affected by gravity. It also helps to compare features to one another, such as her hands or feet. Right now, her right hand and left foot appear larger in the drawing than the left hand and right foot respectively--so think about how perspective plays a role in what we observe. There is some foreshortening for the left hand and right foot in the original photo, so assess the direction they are facing and how much of each side we get to see. Hope this helps!