this is called air awareness. To over come this all you need is.... and are your ready for this.. time in the air. No joke you got to be doing cartwheels, hand springs, hand stands, flipping in to the pool, standing spins. The more you do this stuff the more your smart little brain will take in and do all the math for you. Not to mention that deep visualization, no joke man. Land it in your head b4 the hill. Think about the things you would see in a 3 or what ever trick sitting here right now. for me doing a 3 i would see computer, wall, wall , TV . I know this with out looking. Ya get what im saying.