Join Date: May 2012
Location: CT USA an English transplant
You look much better in the video than you do in the photos!!
The last photo I can see where you ride 'defensively' as you approach the jump - typical of someone who's had a horse that puts in a stop but you don't let that affect the way you get your body with the horse as he goes over the jump - but that could be why your legs slide back. When you have a horse that stops you tend to try to get really deep to anchor yourself and that might result in you putting too much weight on your stirrup. If you look you can see that rather than your heel staying down your toe is the lowest point and your pushing yourself up off the stirrup off it which then pushes your lower leg back
Just winging it is not a plan