patience with the teeth man. smooth them out and do a simpl shade to them.
dont mirror them either, the middle 2 teeth look really off
if youre going for a mantrain type shade, gloss it up a bit, a bit of a white gloss shade on things. and random details, like a blemish on the sking somewhere.
the eye needs to be more subtly shaded, it looks like its been beveled then is flat, as apposed to it being shaded gradually to a round shape