Thanks for the quick answers!
To Robot_Butler : I'm nearly sure I wasn't asleep yet, the dream scene wasn't strong enough and I could still feel my body. I'll try to be more patient next time, but last time it just felt like this eyelid bugging totally screwed the process, i had no more "sleep-announcing" sensations after it (warm body, racing heart).
To daban : Ok, but the thing is my room can't be dark because I have no shutters, so I always get some daylight into my eyes anyway. Do you think it's the daylight that ruins it all?

Anyway, I'll try not to pay attention to this eyelid issue tonight and I'll tell you how it went tomorrow (if i manage to do DEILD since i stopped trying WILD).