Pretty nice, just figuring that out by yourself. All you really need to do to improve that technique is use you ankles and abs a bit. Also, it's much easier if you don't bend your elbows. If you like, I could include a replay showing a 20 frame, symmetrical, hold-all decap. It's very simple to do, and you could combine the elements of that with your move.
Also, you will improve much faster playing against other players. If you want, PM me, and I'll help you out ingame, as it is much easier to learn how to fight in multiplayer, because your opponents will fight back.