Hey, you have a lovely position Lokibusterlover.... Very nice frame, lower leg... all very nice. I would have to disagree about giving the horse more release... over a jump that size, and with a green horse, I think her release is suitable.
You can tell by the picture he is green, with not very much jump training. I have a great excercise, to increase your horses balance over the jump.
Get 6 trot poles, each one at the end raise, but not the other end... so for example, looking at a pole now, you would raise the right, the second pole you would raise the left side.... you with me...Only need to raise it probally 20-30cm, just something that will get his back hindquarters and his front working together... going through the trot poles, get in 2 point.
Hope this helps... he is a beautiful horse btw!