It was hard to see.
I would like to see you lower your hand that holds the reins a few inches.
Your legs look a bit behind you, keep your heels down more, it will put your lower legs in a better position. And lastly get rid of the saddle bags, he/she is not happy in the canter, that might be adding to the problem.
Looks like you both have a good start, sure is a cute horse.
Western is not really my thing but those few things I noticed.
Looking good though.
The best time to plant a tree was 20 years ago, the second best time is today.