ok. you askded for some viewer critiques. I have not read the above critique, and that's somewhat on purpose, since I do not want to be influenced by what is said by your teacher, who knows you and your history and goals well. this is just a pure impression from the video, for what that is worth.
i've watched a cople of your videos, from other threads you have put up for crit. I see improvement, though you are already a solid rider on a very nice horse.
I see that he appears a lot more comfortable going right than left. going right, there's not much I can offer as advice except to perhaps raise your hands a tiny bit and maybe open the shoulders and get into your core more.
those things area always things that we work on.
going left, Ari seems to have some blockage in his neck, maybe one or two vertebrae back from his jaw. he does not seem comfortable bending there, unless he raises or lowers his head, and he speeds up and starts a bit of falling in, or at least he is rushing. It looks like you end up accomodating him a bit there, leaning forward and IN on the circle, and it just makes it easier for him to go faster.
maybe if you could slow your seat down, sit back and set the pace more, he may be better able to slow down. and, maybe working on some squares, so he is able to be straight, then ask for a bit of a bend around the corner, then straight. and, having him become prepared for his downward transitions, but getting some softness in his neck as a prerequisite for transitioning down and slowing down the whole process, by restraining it with the strength of your core.