Your lower leg is too loose, your seat and upper body are rigid. Your hands are not independent and neither is your seat.
I could go into detail but a better suggestion is to get a dressage coach to help you on improving your equitation and influence on the horse.
Over fences you prop yourself up with your arms and chicken wing, you need to keep your elbows at your sides and allow your hands to follow the motion and move up your horse's neck. You need to follow the mantra, keep all my weight in my heels, soft elbows, soft neck, soft eyes and 3-2-leg-jump.
Otherwise good job, you stay fairly centered although your hands are not independent, your seat is better over fences though, you ride more.