Male head study how did I do?

I just downloaded Clip Studio Paint on my iPad, and I’m really enjoying it so far! It’s a fun change from Fresco, even though I did just spent half the day trying to figure out how everything works, setting up the interface and making some simple brushes. Here’s a head study I did as I gear up to work on a male character illustration. I’d love to hear your thoughts or suggestions!

Tried CSP on iPad, loving it. Head study—feedback welcome!