I don't have much complaint on your riding! I agree with above- don't jump the jumps backwards!! And just be careful with the younger horses jumping them, it can lead to arthritis when older, but if you just started when she was 5 it should be fine, she looks well built.
Good luck! Oh and if you were riding dressage your heels would be fine, but with jumping you would want them down just a tad bit more- but they arent to bad!