He's looking cool! Very intimidating!
Guys, I think he's, um, building a model here. He's not yet animating it and working on posturing, gate, or anything like that.
Human anatomy doesn't really apply, nor do "laws of nature". This is a monster that doesn't abide by either one.
I will agree though, the legs should be a little bulkier. The hands are fine. You don't want the hands to be retarded-lookingly large, lol.
But keep at it, he's mean, ugly, and stout!