@VoidKltten This how I would draw the circle, I’m not sure how to explain it but notice how the yellow lines align perfectly with the circle
This is how I his features are defined
@VoidKltten As someone who bases their work on the 3D models, the position of the circle depends entirely on the angle of the face. The ears and muzzle are not necessarily contained within the circle, as their placement varies depending on the perspective and orientation of the head.
@VoidKltten I've studied Sonic's 3D model for years and based my entire art style on it Early on I struggled to fit all of his features inside the circle at every angle, like you did in your post. then I realized that there's more to it than simply drawing a circle around the ears and muzzle