I dunno if it's the lighting, the top right fang looks dark down one side, giving the impression the fang has a lick of yellow paint on some of the surface, not all.
Blame it on the photo, the pink shiny tongue paint app don't look as good as it should.
The black shiny lips, have those been added by the guy holding the Kessler head?
The eye's could use a lick of glaze, to bring them to life