It really varies from person to person, and from WILD to WILD. No WILD will be like the other. It will probably form in a mind-boggling way (which the tutorial makers only describe using allusions ) but usually it will be very clear. Your hallucinations related to Sleep Paralysis will start to get more complex and eventually form the dream scenario.

My suggestion is not to worry about it much. Just, in case you see anything related to a dream, focus on it with all your senses, and you will probably enter the dream much easier. It's really hard to explain how it happens

But you might want to hear more experienced WILDers' opinions... I can only DEILD myself.