I really don't want to judge his legs or anything because of how he is standing but if you post some pics of him square (or close) with his head up then I'll def. Critique those for yah!
He looks to be a little underweight. Not too ribby but lacking muscle, especially in his back and shoulder area. His shoulder looks a little upright but that could just be the way he is standing. (an upright shoulder will restrict the free movement of his forearm and cause for shorter strides that do not absorb the shock very well). He has a long neck and a long body, but it looks relatively in proportion.
Gossh this critique is hard!
Well I'm going to shut up now. I can't judge him very well from these pics but if you stick up some good conformation pictures and maybe some of him in action, that would be good :)