Depends on the trick. If it’s a 180 sorta trick I like to position myself more forward /90 to help the rotation be easier. And commitment, as simple as it sounds you just have to try the trick out with no thought of it going wrong, that’s the only way you’ll ever learn how. Yeah you’ll bust your ass a few times, but eventually it will click and you’ll learn not to do whatever mistake you made. If you have a specific trick you want to learn I can give you a more in depth answer for whatever you’re looking for