He's not well balanced. He's got a really long neck compared to the rest of his body. I like the look of his face though.
I don't know what horse you're looking at.. His neck is actually a bit short.
I like his overall balance - nice and uphill with a well set neck. His hindquarters are a bit weak looking but with correct training they can be strengthened. His back is a fair length. He is slightly pigeon breasted as well. I can't really critique the legs, but there is nothing glaring the hind legs may be a bit straight, but they are well under. His throatlach is not as refined as I would expect from the breed, but it is still good. Keep an eye on his feet - although they are not visible from the picture it looks like the angle is a bit steep and that they are a bit small.
I quite like him and he looks like a good lower level dressage horse. Although all horses can do dressage he is what I would say is "ideal" for someone wanting to learn because he is built correctly for the sport. I don't see him having an issue with basic collection - except for strength in the hind quarters - but caveletti and correct basics will help that.
I fully agree with Anebel. Uphill is a good thing for dressage =] Are you able to get a square shot of him without that hind leg parked out back? I'm pretty sure that he'd be higher in the croup if he was standing properly. Well, that's how it appears to me.
He's cute though =]
...Every rider has that one horse that changes everything about them...