Last night, I think I almost accomplished a WILD.

I went to bed at 11, and slept until 5, I got up and went to close my door. Since I really felt awake already, I thought it would be counterproductive to stay up longer (this is always the case for me, also with WBTB).

I lie down on my back, and start the method BillyBob describes in his Wild tutorial. (It involves lying on your back, totally still, and while you breathe in say 1, and when you breathe out "I'm dreaming" and of course instead of 1 the number that you're at)
At about 50, I started to feel vibrations and a tingling sensation. But, there never was any imagery. The vibrations became heavier, and also the tingling, and after a while I had to really try to breathe properly. My pulse also raised a bit. But after a while, these sensations faded, and at 150 I gave up, since I didn't feel any progress at all.

So my question:

What to do to continue? Should I just hold on longer? Or did I miss something?

Thanks in advance, I want to try again tonight, so feel free to respond