Okay so the first thing I see is her skin, I know I told you to fix that a bit but like I didn't mean use a pink color for the shading ;w; if you want, to do some really easy shading with the airbrush just take a orange color (not TOO strong) and just airbrush over the skin. It looks decent for your style :3
Her hair shading is a little off; there shouldn't be a really bright light spot on her hair in the back because light generally doesn't go there. And the shading on the bottom half looks sort of choppy and odd.
I like her eyes and her outfit though, and the highlights that you added :3 it looks somewhat decent overall.