For some people it's very confusing to try and transition into headdown to learn headdown. If you can't do it, how are you supposed to be able to transition into it? try launching it, or I read this somewhere: on your belly dearch, that should flip you on your back, but in that you will pass a headdown position, then arch, that will flip you back to your belly. keep doing that until you find "the spot", you will eventually not have to wait all the way till you're on your belly or back. haven't tried it, but it seemed to get the guy going in about 15 jumps. but have someone tell you when to best exit.