second you need to be able to do them on a ramp.
and third, find a big stairset, go fast, throw yourself in the direction you're comfortable spinning in, keep your arms and legs close so you don't catch air, spin and voilÃ?Æ?Ã?â??Ã?â? ââ?¬â?¢Ã?Æ?ââ?¬Å¡Ã?â??Ã? ! a 720 down a stairset. (but seriously don't try it, you'll die)