There's another neat little possibility that I found from the 4th variation of the 1st release. It's the version where you begin by stepping back first, as shown in the video below:
I had found this next video a while ago, and liked much of it except the beginning. Our dojo's approach is much more focused on keeping our centers moving through space (hazumi), so I tried this "back of the hand to the face" idea after an initial back-step (like the first video). The result was very nice, very light, and yet pretty potent.
I love experimenting. I feel like a little mad scientist!