It's important to study the art of the high-kick. It isn't really about the kick itself. The kick is a signature for everything I stand for: to be yourself, to stick out, be the top of your game, and doing it with humor and style. So here the art of the high-kick comes:
Start by standing still. Both feet on the ground and arms relaxed. The high-kick always comes unexpectedly with great energy, and is in contrast to everything else around you which is planned, forced and static, and therefore it's important you do it from a relaxed pose. Then practice by raising your leg up, at first bended in a 45' angle, and then higher up, ending with a straight leg. Now it's important to also straighten your toe, and then keep this pose for a few seconds. Learn how to balance yourself with a straight leg and straight toe. Yes, you will laugh -- that's the POINT! -- and anyone watching you will laugh too. Especially if you are a big, broad-shouldered guy like me.
When you can control that slow kick, you need to add your hands. Pretend you are a T-rex, with angled hands downwards, then kick, and make a sound effect. I like the "Weeeee" with a light Michael Jackson-voice. You can also finish off with a crazy face after the sound effect, like it's an attack on your enemy. Show your teeth.