Skull Sculp Training Work In Progress

Hello CGCookiers 😊, After doing the sculp course in CORE, I've decided to challenge those news skills with a little skull challenge, and I'm a bit in a dead end now. I think the proportions of my sculp are decent, but there is always place for improvements. About the skull details, I'm not sure where to start. So if some of you have feedback to give me about this project, I would really be grateful 😄not just about the details or proportions, but overall, what I could improve, what is correct, etc etc ... Thank you all !