His hind legs are a bit posty and his pasterns are very upright. In addition he is lacking bone in his legs, particularly given the size of his body. Not a horse I would choose for jumping or any kind of high impact endeavour. He looks to be built rather downhill, although it is hard to tell if the picture is warped from taking a screen shot or not.
He is a pretty boy for sure, could be fun for some low level stuff! I wouldn't pay big bucks for him though. JMO.
He's very pretty. The only thing I really see conformation wise is he has pretty steep angles and like someone else said, he's a little posty. What do you want to use him for? I bet he would be gret for HUS and equitation... don't know much about jumping.