The things that stand out to me are your arms.... which are straight out in front of you and locked and your knees... which you have pinched through the whole course. I also want to say your stirrups are a hole or more too long.
Your whole balance is tipped forward. You need to work on some basics... keep your heel down, weight in your ankles and grip in calf and thigh with your knee open and almost off the saddle. At the same time you need to bend your elbows, bring your shoulders back and open up your chest.
Basically you need to balance yourself over the center of the saddle. Currently your balance is right over the pommel. This causes you to chase down the fences, getting ahead of the motion, which causes bad spots (like the chip) at best and going over the fence without your horse should he stop. By bringing your weight back and using your seat/leg to push your horse to the fence, you can adjust the striding allowing you to get nice spots each time.
Your ride is really nice and quiet, minus a few missed spots. You'll def have some winning rounds with some more experience. This horse is a saint and really knows her job. When you ask mostly right, she gives it, but you still need to do a little work to have perfection... an excellent school horse.
If your horse says no, you either asked the wrong question or asked the question wrong
And God took a handful of southerly wind, blew His breath over it and created the horse