I've been trying to study heads and facial expressions a little more. Here is my most recent 30 minute class
https://imgur.com/a/RqmBXJh
I'm trying to see how I can simplify them to fit onto my figure drawings but still maintain their expressions, which is why I've been trying to draw them relatively small and on the one page. It feels very difficult for me, I strangely seem to understand the anatomy of the rest of the body much better than the face. I mainly have issues with the jaw and mouth and I struggle a lot when it comes to drawing females.
Any advice is welcome, whether it's something I'm doing wrong or something I can do to make the process more manageble :)