Hi alexus!
Did a two quick paintovers:
first pic, I realize that the hand was in perspective, but I think you pushed it way too far. That hand is huge!
For the creature design, I don't think I made it any better (tried to make it look like it was walking), but the way that right leg is bent... just bothers me. I honestly think it should be bent the same way as the other front leg.
I've seen bulldogs that have the same weird bending in their legs, but once again, I think this one was taken a little too far.
I love the design though, awesome stuff.
I don't see any problems with your other pictures. Great 3D scene btw.
you're a really talented artist, keep it up.
feel free to post more!