Try visualizing...anything. It could be the dream you just woke up from or even visualizing someone skating to soft music on your bedside radio. Try turning those hypnagogic images, in your mind, into actual things. The blobs you might see could be clouds. A grid pattern becomes a fence and so on. I happen to think that hypnagogia is our brains attempt to stimulate the secondary visual cortices (the place where dreams and visualization occur) . Therefore, those weird images are our brains primordial ooze of sleep images. Good luck to you!