start by jumping as hig as you can, land on your back, and bounce over your shoulder so its kinda like a back-drop to backflip. once you srate gettin more comfortable with that, get a friend or to (this will only work if your fairly small or have really big friends)so your jump and do a backflip and your firends hold one hand on midde of the back of your thigh and the other on your back. when you jump, they flip you over using the hand on hte back of your thigh but you have to commit to it too. once you get comfortable with that, just commit and you'll nail it like a dead baby to a tree