After creeping around on our pony's page trying to figure out what you do, it appears ya'll do a bit of everything. Good for you!
Starting with your pony, she looks fabulous! You've gotta love those pricked ears, she's having fun! Nice spot, good tuck with the front legs, you've got a great little jumper there!
Your leg looks very solid over this fence. It may have slipped back just a little bit, but not noticeably. If you're finding that your leg is consistantly slipping a bit, I'd recommend lots of two-point work. If you focus on sinking all of your weight into your heels while you do it, you'll find that your legs will become a lot stronger and much more secure. Especially for cross country a strong leg is essential.
Your crest release is more than adequate for this size of fence, but that's not a bad thing.
The only little note I have for the future is to watch your upper body. You've gotten into the typical hunter equitation ride, and it looks pretty good. But especially on cross country or in Pony Club events, I'd keep my upper body a bit further back. Instead of thinking A jump! Let me throw my body foreward!
I'd focus on letting the jump close your hip angle and sink you into your heels.
Over all, a really nice fence there! Pony looks happy, you look very safe and secure, wonderful jump!