That's, like, super amazing.
For serious.
I especially love your detail work.
There are a lot of people out there that don't put enough work into the little details that make the difference between good artwork and amazing artwork; you're definitely not one of them.
There's only one little thing I see that looks slightly off, and that's the far eye. There's just a little something that makes it seem a tad off. It might be that it's a bit too large and is throwing the perspective of the face off a teeny smidge.
But that's the only real thing that I'm seeing that's off.
So, great job, and don't take my words too hard, I'm just trying to be constructive. ^^;