I'm new at this so take it with a grain of salt.
Steep croup, built very level or slightly uphill, slightly pigeon breasted, high set neck, thick but very evenly muscled along the top, may have under muscling (can't tell)
Stands nice and square from the front in the last picture, nice straight legs, steep shoulder angle, I think he's a little posty behind but very nice short pasterns. Lovely shaped head. Would love to see a view from behind.
Does need more topline muscling as he has a very defined wither. How does his saddle fit?
How does he travel under saddle and in pasture?
He's beautiful :)
"Strength is the ability to use a muscle without tension"