it looks like hes angry when he walks, not so much...just a stroll...but i dont know what you were going for.
lighting seems off, especially on his head, where the lighting comes from above, while everywhere else the lighting comes from the right.
i dont think it looks good with skin-tight clothes, but that might just be me.
his elbow joint seems misplaced...
normal:
|
|______
yours:
|
|
|__
if that odd diagram helps any...
finally, his head is very oddly shaped....
the animation is nice and smooth though ^^ goodjob on that.