Michael,
Good work. The eyes looks a little popeyed. You can correct it with a darker color (raw umber for instance) for the upper eyelid, and some lighter dark color for the undereyelid (burnt sienna). You line the eyelids off and it looks better. The blackspot (pupil) must be bigger. If you look at a eye in life, you see that the white is alot smaller then you imagine. The iris and pupil are about 3/4 of the eye.
Marc