I don't know. Maybe it's just because I'm so used to the big draft butt now. Lol Especially in the shot where he's kind of walking away, his butt just seems small/weak compared to that powerful front end. *shrug*
His hooves are tiny, scary tiny at least to my eye.
His withers are very swept back... I don't know if this makes sense and if there's an actual name for it or whether it's a "problem" or not, but his withers seem to "end" way farther back on his back than usual.
I think his neck needs more muscling too.
Overall, though, he looks pretty impressive. He looks like he's in good condition.