It's Fix It Friday sponsored by Total Saddle Fit! They make spectacular cinches and girths to keep your saddle off your horse's shoulders. This week's picture comes from Emma! Here's what I see.
This is a bit early in the fence, but I'm seeing quite a bit of weakness in your base of support. Your toe has turned out, and you're gripping with your knee. As a result, your leg has swung back, and your pelvis is way up above the pommel of the saddle. This places greater weight over your horse's front end, which makes it more difficult for your horse to clear fences. I would like to see you "squat" over your saddle more, to pull your weight back just slightly.
Your release is quite good for this height of fence, with a loop in your reins, but your pony's nose is still tipped in the direction you intend to travel, which is nice as he can be prepared upon landing. You're also looking up and ahead to plan your track, which will help you ride more productively upon landing.
Your pony is jumping decently. Their back is quite hollow, but that can be improved with gymnastic work. Overall you two look decent, but improving your base of support would help your pony. Hope this helps!