Hello! I recently began to get into the structure of the skull, mainly because I've never learned how to properly draw a head. I did some practice today with the technique that Andrew Loomis uses in one of his books. Do you mind critiquing it? It feels like the jaws that I drew are almost too.. thick? Round? I can't quite pick the word. But I don't know exactly how to fix it.
Also, the one at the top left corner (the face facing forward); should the face be skinnier? I feel like it should be but I can't think of exactly how to do that.
And any tips on how wide (horizontally) the chin should be? There's not an exact guideline and it's making me doubt myself. XD