first, I think it is a nice drawing and pose.
The reflected colors in the corners are from a back light, I know it, it separates the foreground from background.
the shadow of the hair can be orange even and looks great.
I only check the facial features and realise nose is distorted a bit the left of the viewer.
You should allign it to the chin and draw the contour of the shadow area so you wont mistake again.
again, Nice drawing and composition.