There's almost nothing wrong with this one as far as I can tell, (and that you just need to keep practicing on the shape of things, I don't really know how to say it, but it's like some of my early drawings in that...I can TELL that it is an early drawing. It's hard to explain... -_-U )

The only thing I can really say anything about is that the left side of Lozk's muzzle wouldn't look like that from the perspective you've drawn him at. there is an extension of fur on his right side that you've drawn, but nothing on the left. To achieve the view that would make the muzzle look better like that, you would have to show the curvature of his head a little more, or draw more light colored fur over that. Does that make sense? I think I confused myself over here a little bit.

Other than that, this is a great drawing! very nice!