Nostrils are a little bit to far apart, eyes look a bit funny, maybe make them more circular?
Also, move them to the center line (up), they look a bit out of place.
The right eyebrow
(to our right) should be flipped horizontally, so it's the other way. Right now it looks like the
left eyebrow, just duplicated and moved. Also, left part of the tongue seems a bit to
edgy, make it rounder as the right part.
Rest looks okay. ^^