He looks like quite a character and has a kind expression. Neck a good length, but thick and ties in low. Shoulder quite upright. Back is a good length, but his loin is longer than ideal. Nice hip and croup shape. Hind leg a bit over-straight (posty). He is pretty upright on all four pasterns. Is he halter bred by any chance? Could use more bone for his body size. Possibly small feet.
Would like to see better photos of his feet, as they look clubby, or poorly trimmed, which could be contributing to the upright pasterns.