@@MirmeTaekwondoTV[* the movement of the legs till jump up to the air with the left / right leg up * and perform turning and kick] (it's very necessary for a 720 roundhouse kick, 900), with a nice "kstep" we have a powerful and nice kick. Sorry about my english, but a RIGHT kstep is neccesary for performing a 720 / cheat900 kick or 900. I have spent 1 year for improving my 720 roundhouse kick /cheat900 with the only reason "wrong kstep".