First off, may I say, what a cutie! Sounds like he can have a bit of an attitude though!
Anyway, I couldn't see any huge glaring problems at all. =) In some of the pictures, however, I did notice your hands are turned in slightly-at my barn, we call it motorcycle hands. It's not too bad (I catch myself doing it sometimes), but that's one thing I noticed. You seem to have a good shoulder-hip-heel line, and your heels are down, toes up.
Can't say I noticed anything else, but I'm not much into critiquing, and I'm sure others will point out anything I've missed. (heehee)
May I ask, what are you working? (Huntseat, dressage, jumping, etc.) I noticed the jumps in the background and wasn't sure...just wondering. =)