I really like the amount of detail you put in the iris and lashes, But a couple of things bother me. The tear duct looks a little too pointed and bright for its location on the eye. Second would be how stark the shading is on the left side of the eyeball itself. I feel it could use some gradual modulation toward the iris. The shadow doesn't seem to fit the form of the eye either, But that could be potentially because of the sharpness, i'm not entirely sure... But other than that, I love it, and respect the amount of time it seems you've put in it.