Mind if I redline 'em?
It's hard for me to write out the critique, I'm in a drawing-type of mood anyway. XP
EDIT: Couldn't wait, I have to go soon anyway. XP I re-drew the pose because I wanted to understand it better, so apologies for the sketchiness of it.

Basically, watch the thickness overall, sometimes the limbs are thin, sometimes they are thick. I highly recommend posing for yourself (and take a few pictures for your own reference!) if there is anything you don't understand.