I really like it. I'm not an expert on critiques or portraits.. but anyways.. I like the branches in the background and I think you did good with the expression and hair. At the bottom of the piece, was it intentional to make the chest sort of blend into the background? The shading is soft, which is good, but I think it could look better with more defined shadows on the face?

Could I get some feedback on my line art? does anyone have some tips on how to improve this?