dont think of doing a 3. if you think of that then you will probably do a 3 or do an over rotated 3, well idk about other people but thats what used to happen to me. if its your first time trying it then try to picture yourself doing it in your mind a lot and jst think of it as you watching footage of yourself or in first person, this might seem really retarted and wierd but thats how i started to do them. just pop and look over your shoulder and dont stop until you get the 5, and try to tuck it a little