I'd agree with Miran, but I think some ideas may help you. People love tricks that involve the ball spinning. So (if you can do) those spinning finger atws then a sideheadstall or something, it'll be fancy! even if you mess up on that, it's easy to go into shoulder stall and recover (for me at least). You might wanna do some handstands with the ball in a neckstall or hamstring stall or something, that is good too. try not to go into too advanced stuff because if you mess up and the ball goes far from you, it's embarrassing to run over and get it, BELIEVE ME I've had experience.