As gab said, to Dreamviews!

It seems as though you're constantly focusing on reaching a certain stage with your WBTB technique, simply lying in bed and just 'waiting' I can assure you, will not achieve the SP you're looking for. I think people forget that the essential part of WILD is to 'fall asleep' and simply OBSERVE this happen. When I say observe I don't mean staying conscious with your thoughts racing all over your mind, but observe in the sense that you try and hold onto the little shred of consciousness you have when falling asleep. You shouldn't be looking for SP because you haven't yet experienced the sensation haha.

OK, one technique which I can recommend to anyone is Crazyinsanes automated clock technique, the 'CANWild' it's called. The benefit it has over the general WILD technique is that there isn't a need for the essential relaxation phase (the part you seem to be struggling with), that is, only if it is done correctly.
Here's the link to the CANWild method -- http://www.dreamviews.com/wake-initi...torial-**.html

Another tutorial I suggest you check out maybe even before that one is KingYoshi's complete WILDing guide, it's a wonderful tutorial which gives plenty insight into the various WILD methods, here's the link-- http://www.dreamviews.com/wake-initi...wbtb-more.html

Keep us posted on how it goes, have firm belief in yourself that you will do it, and trust me you will accomplish it.