I love the expression on his face in the 1st pic..I'd just like to say that he's absolutely gorgeous!
In the first photo, he's got his knees up well but his feet could be a little more even, but he's clearing it with height to spare so it's not really a problem.
2nd and 4th his forelegs are dangling a bit, but in the last pic he's jumping really nicely. :)
Overall he looks like a fabulous jumper and like he's taking all those jumps really easily!
And if that's you riding him, you look really good too. =)