Props on the camera angle i want to see one looking down the hill too just for fun. i think we all would be able to give better feed back if you have someone film more conventionally. My guess is that you have some skidding at the middle, end of your turns??
I like the way you are leveling your sholders durring the turns. This puts you in a great body position for angulating creating strong edge angles to the snow. It seems like you are throwing your outside hand up and accross your body to start the next turn, rotating upper body hard adn then countering back durring the controll phase of the turn. Weight seems on the back foot. Front leg is very straight and dose not flex much in general most of your dynamics are above the waist.
Go to a moderate slope where you are very comfortable. First things I would work on is balance and getting more wt over that front leg, and in general keeping both legs bent more. Standing stationary on your board visualize some turns and make the movements like you are riding only keep your hands on your hips focus on the bottom of your front foot, then ankle, knee, femur. Then do some runs with a focus on just your front foot and trying get you to feel an entire run with just the bottom of your front foot. Then do it again but focus on just your front ankle, again on your knee, again on your femur/hip socket. Feel the ankle and knee open to the heel side and close to the toe. Keep your upper body very very still hands could even be on your hips. Keep your eyes on a fixed point a long way off down the hill or on the horizion.
Do some drills keeping your hands more still or at least keep your right on the right and left on your left.
Think about dropping your hands to your boots or to the edges of the board right to the right side, left to the left side. Rather than accross your body. (EC is different adn your upper body rotation would be more appropriate but still need some adjustments.)
Then do some runs on more fun terrain where you just focus on leveling your sholders and hips like you already do like a hero but keep your hands where they belong and maintain a little focus on that front leg.
Too many words. FYI i typically take one element of my own riding that I feel like i am trying to improve upon each season and focus on just that one element for most of the season. I do get off one some of the tech talk so sorry if I got too long winded. Just remember that what ever your style it has to be fun for you.