I am trying to get into a lucid dream by means of S.P. and WBTB. I managed the S.P. twice, yet I tried a few nights ago and I barely got any kind of vibration.

Is there an actual technique to S.P.? I always lie on my back or side, relax, and don't move. Is there anything else I should do?

I close my eyes too, and I visualize a simple place to appear in in my dream. I ignore itches and the urge to roll over, I don't move at all, beside the odd jaw movement or finger twitch.