Well, as it is the riding critique section, I believe it's ok to put here.
As for your positioning, you have a nicely balanced seat and good give, the biggest thing that stands out to me is your toes that are basically pointed perpendicular to your horse!! Forward toes please!
He is a cutie and looks like he is having a blast!
Agreed about the toes. Your horse looks happy. I think he can jump higher/wider than this.
I REALLY like how you are resting NO WEIGHT AT ALL on him with your arms. It is SOOOO pleasant to see someone who understands that you need to Balance as the horse goes over a jump.