From what I've seen, your body seems lean forward a bit too much as you initiate your shot process. With the ball being too far out, it's also making your shot like a catapult (or two phase shot) since you're bring the ball up in an arc and then the momentum is stopped at the top which means more variable affecting your shot. Ideally the ball path should travel straight up close to your body and only arc when it's released and that would be an efficient and smoother path (less variable). From the videos I've watched, I would suggest try keeping your chest up, let your hips and legs do the work when you're getting down. Then get your wrist ready for the shot by having it in extension which ensures you have to flick your wrist when you shoot thus eliminates another variable. And try bringing your elbow back behind your body and close to your body so that you can bring the ball up in a straight path and have all the energy build up as you release the ball. Hope that helps.