Don't take too much time to slow down, maybe a step or two, or else the defender will know something is coming. If you go too high, the defender will take advantage, and knock the ball away.
[header] How to do a ronaldo chop [title] Leap over the top of the ball. [step] This isn't a big jump, more of a hop-step to let you get your feet in the right position for the trick. [substeps] This is a trick you do while running, so you may need to slow down slightly before your leap in order to keep the ball close by.