Robbie looks gorgeous and talented! You are obviously a good rider and have spent a lot of time with instructors learning how to be one.
A couple small upper body tweaks might help your hands. Rolling your shoulders back/down and putting your elbows at your sides will give you a better connection to your horses mouth. In your computer chair right now, put your arms at your sides like you were holding the reins. Thumbs are up. Now raise your elbows out away from you and look at your hands. Flat! I think you may be trying to fix too much with your hands which is usually what causes wrist cocking/lifting and other weird habits. Think of having a soft, following elbow. Be mindful to make corrections to your horse firstly with your legs and seat. Pretend you don't even have forearms and hands (other than keeping them closed on the reins
); imagine the bit is connected directly to from your horse's mouth to your elbow.