Heres my opinion-
-the ears are to wide, and not long enough
-the face is disproportionate
-the hair looks great, needs a little more detail though
-eyebrows are to curvy, the needs to be more "square"
-the nose is too long, needs to be more triangular
-theres no hair coming from his neck, theres more in the anime
These are just some improvements that i think could be made.
Just one question with the neck hair thing, are you doing pre-time cahmber or post?