Another important thing people tend to forget is, when WILD'ing you still need to FALL ASLEEP. Now, I haven't WILD'ed a lot, but when I do attempt WILD, I'll let my mind drift off, and from pure will I "come back to consciousness" exactly when the transition occurs, feeling a surge and a tingling feeling in my body. When I've had HH its been a matter of just seconds before I was in a dream or had an FA.

My point being, you still need to fall asleep. You can't focus on what you see in your eyelids all the time, like Gab says, when you see HH, you will DEFINITELY know it, there's no way to miss it in my experience.