So last night I went to bed about 10:30 (was planning to go earlier but was kept up a little longer) and I attempted to WILD. I may be understanding it wrong, so I'll tell you how I did it and any help would be very much appreciated.
I went to bed, got comfortable in a spot where I wouldn't have to move around, and laid perfectly still. I had my iPod on softly, playing some music that is meant to work with subliminal messaging or something while you're asleep (I think I actually got it from this site somewhere before I joined). I was absolutely still, breathing went right down after about 5 minutes, and my muscles where so relaxed, they were just sinking into my bed. In my head, I was cleared of all unwanted thoughts, and any that came up I would just let them go. After a while they stopped coming, and all that was in my head was my mantra ("I will be aware that I am dreaming"). I thought about this mantra as much as I could, so I could get a real understanding of it completely so it would stay in my head. Whilst doing this, I got this image in my head that I was on a beach. Not a warm, sunny one, but one with no temperature, the sea was green, the sand was grey and wet, and the sky was purple (I don't know where this came from, I just went with it). I imagined myself touching the sand with my hands and feet, walking on it, and playing with it. That was pretty awesome because I almost felt like I could feel the sand. I kept going deeper into this scene, whilst remembering my mantra. I was there for what felt like about 10 minutes, but I was there for about an hour and a half (I know how long the music I was listening to goes for).
Now this would be all well and good and great progress if I was after meditation, but I was trying to trick my body into going to sleep. I was there for, as I said, about an hour and a half, not the slightest bit of movement, and no sleep paralysis. I think there was a time when I got some small hypnogogic hallucinations (they were little shapes and colours moving around and forming before my eyes, while they were shut. Not sure if those count) but nothing else. I tried doing some reality checks, but it was hard to without moving, so I just tried breathing with my mouth closed and stuff like that, but I was still awake.
So I just thought I'd ask, was I doing it right or wrong? And is there anything I could do to improve it? Or did I just have an off night and need to persist? I also tried the WBTB thing as well, but I'm not sure if I woke up for that one, I don't remember. I did have three dreams though, and could recall 2 of them pretty well. I just didn't become lucid during them. Which isn't such a disappointment I guess, because they were all pretty boring.

Anyway, sorry about the long post. But again, any help on this would be very much appreciated.
Thanks very much in advance