Great job here! The only criticism I can give is that the shadow on the left (your right) of the nose is a little too strong or pronounced. The shadows on your eyes is great, though.
Very pretty. Personal taste: I would have liked to see the shadow on the left side of the face follow the contours of the nose more closely: as is, the double shadow gives a clownish (distorted mirror) look to the figure at the dimple and . . . especially around the chin. BOL - and still a high mark. And I wish I could accomplish something even relatively close to this!