The mouth is a bit too straight, like it should look like a reptilian mouth going lower on the head a little bit, as it is too high in my opinion. It makes it look my the face is being smushed in the front, kinda' like its pressing its mouth against a glass window.

Try shading the bridge of the nose to make it seem like it is more 3d, and you may need to make the hair and junk a little less smudged, because it looks like soft fur or an owl's fluffy feathers.

I like the colors, but try to add more depth into the art.

You should really change the mapping of this head all together, its probably because youre on a tablet but youre drawing everything too big.