Here is what I am seeing. You have a very nice basis, but do need a little fine tuning.
For your upper body, you are trying to duck down some. You really do not need to move your upper body down over the jumps - the horse should be coming up to you, bringing your hips up towards your body which will close that angle to where it needs to be. If you look at the size of the jumps, and where is really stood out to me was over the second log, is that your are trying to make this angle happen by almost "lying down or towards" the neck. Just try to keep your upper body still, and your hips fluid.
That being said, the one thing in your upper body that does need to move is your arms. There is something that looks stiff about them. One is that I think you need a little more release. The other is that it looks like you are not moving in time with the horse. As the horse stretches forward in his canter stride, there should be a soft forward give. When I am having trouble finding this rhythm, I will let my hands rest on the neck lightly so I can feel that movement, as the neck movement is what you very gently want to follow.
Your posture through your back is nice, it looks like you are using your eyes well.
Have you tried shortening your stirrups a hole to see if that helps with your leg stability? I think making your upper body quieter as well will help with your legs being calmer. Beyond that, I am having a hard time seeing your legs good enough to really tell you what to do to help them.
You and your horse have a nice workman like presentation and that will help. It's obvious that you are serious about this, so that's why I pointed out some of the smaller details. Best of luck to you with the Eq team.