You guys are welcome!
Arnisador,
You can start by looking at your relaxed shoulder. Begin by very slowly rotating your shoulder circularly to the extreme ranges of motion without straining. Then pick up speed. The rest of your arm should be totally relaxed and should be doing a bit of a whipping up and down as your shoulder rotates. Change directions.
This kind of natural whipping motion gets enhanced as you coordinate the rotation of your shoulder onto the a half-twisting movement of your torso. Keep straight in posture while doing this.
It gets further enhanced when you incorporate the figure-8 motion of the shoulder instead of the plain circle. This movement is great in helping you evade or slip an attack/punch/kick and immediately attacking with same part of the body that was targeted.
Of course, you would first train the figure-8 slowly in the horizontal and vertical directions, then incorporate the twisting at the waist. If you first do this quickly, without knowing what you are doing, it looks like there is something wrong with you mentally. Start slowly, and as you begin to feel the "wave" energy propogate through your relaxed arm and shoulder, you will be able to connect this sensation throughout the upper body and into the hips where you can get your legs involved.
Later, you can start this wave motion without telegraphing by training to start the wave on a step or a movement to correct yourself after being thrown off balance.
Hope this was clear,
Kwan Lee