This is my technique for WILD’s, based on bits and pieces I’ve learned here and there…
What I do is listen to the buzzing/ringing in my ears as I’m going to sleep at night (I usually don’t do it in the early morning because I might have trouble falling asleep). The ringing is very faint at first, and I can usually only hear it in complete silence. I harmonize with it, by thinking the same “eeee” sound that I hear, and this seems to make it louder. As I do that, I also count backwards from 100. When I reach, 0 I start over. I also sometimes imagine either my hands or a ring of energy sweeping up and down my body. Sometimes I don’t. Sometimes I drift off to sleep before the next part…
Eventually, I start to feel the vibrations, which feel like an electric wave running through my body. For me, the vibrations start small and only last a second or two. After several sets have come and gone, the vibrations will be big enough for me to have a WILD. By then, they feel more like lightning bolts than small shocks. They also make a distinctive VOOOOM sound. If I let them go too long (which I did when I was younger and didn’t know how to get out) my body might start to convulse and jump around, usually causing me to awaken (not painful or unpleasant, sometimes I’d be laughing like it tickled).
During one of the larger (but not too large) vibrations, and while the vibration is happening, I’ll log roll to my side. My physical body doesn’t move, but my dreambody does, and when I stop rolling I should be in a dream. For me, just imagining the movement doesn’t work, I actually have to try to move, just as I would normally move. No imagination. Took me years to learn that.
Anyway, the above is everything I do, as best as I can describe it. I’m sure other people do other things, think other things, and feel other things. One important note, however, is that the vibrations have a very electric quality to them, and in the past I think a few people have confused this stage with the nice little numbness feelings.