I'll happily borrow your heels. The only thing I see is you're a bit ahead when your horse leaves from a long spot. I'm thinking, when you see a long spot, you assume the position and let your horse take the long spot. I'm wondering if, when you see the long spot next time, if you sit up and ask your horse to shorten his stride on approach and add a step, you might be able to get a nicer jump out of him.
I don't know much about jumping. It looked like your leg got ahead of your from time to time, instead of under you. But honestly, your horse looked like he was comfortable and really trusting you and your hands. He's really a sweet lil' guy.
I second shortening your stirrups a hole. Over jumping can be a byproduct of stirrups too long, and yours do look on the long side. Everything else looks really nice though, soft and natural. You could probably start experimenting with an automatic release since you're base looks pretty solid.
I agree with what everyone else has said, but I would like to point something out about your heels/ankles on the flat. While your heels are down, your toe is pointed completely forward, in some pictures it even looks slightly turned in. While you don't want your toe pointed out to the side, you want it pointed out to a certain degree. You loose flexibility in your ankle with your toe at it's current angle.
Thanks for the critiques, tinyliny and countercounter you guys are spot on- I do tend to let my lower leg get a little in front of me, and my coach is always telling me that my toes are pointed too forward! Thank you!