Good work. I always feel like I'm harsh on you but I can see you improving.
With this piece, I feel you took a few design directions that I wouldn't have done myself (the teeth), but overall this feels much more like an "the_ultimate_evil" piece than your other works. It just seems to have a bit more personality in the lines that is original instead of your artist inspired works (Joe Mad, etc.)
Good worl TUE...
* I still would like to see some full body poses (don't need dynamics or anything but give them a bit of a twist in the hips so they're body is notfacing straight at us.)