He looks green and the pictures aren't the best for evaluating but at this time in those pictures this is what I see:
I would like to see some pictures of him on level ground, he looks to be a little strait on both his shoulder and rear legs (could be the ground)
He looks a little leggy and tight gutted, he is green so feed and time could be all he needs, get him on some feed for about a month an let us seem him again.
Again it could just be the pictures and the ground, not trying to slam him, just what I can see.