Thought I'd share some of the stuff I just started creating in AP. Took me a bit to get past some interface issue but I'm getting to where I'm comfortable with a workflow in AP. These are just studies and not intended as finished work. Enjoy.
Value study of an eye:
https://www.artstation.com/artwork/8labgn
Value study of nude female (NSFW):
https://www.artstation.com/artwork/dOlv5A