ultraman - learning it slowly is the best way to go...helps you get the motions and balance.
BGrL_MysterYuz - make sure your elbows are stabbed and GO SLOWLY...also make sure they are perpendicular to the ground(straight up and down) or else you will just slide down to the ground. Also...keep practicing because it will help you build up balance and maybe some strength so you can do better turtles
breakyastyle - stab both arms where its comfortable...it takes more balance than a handglide because you don't have your arm by your head to help with balance.