You know, that’s a very good model, if you add a little lip color, perhaps even draw a sharp line, around part of it, like the eyes, it really good - - if I were you, I’d start thinking about animating, and story-telling, right now you have a Disney quality, World class model, and should try for Greater challenges, like animating it, making it talk and, Do stuff - -
Another thing is, you can make a face - rig, with bones in the face, like bending it, and use that to create and, move face parts, like lips, eye-lids, so on, and make Facial animations - -