This seems good, i might try it.

I use to do this when i was younger but in a place with good ilumination. Found it fun because after a while i would start seeing stars and cloud-like things moving on my visual field and the vision would go totally white from the periphery to the middle without me being able to see anything anymore at a point.

Never tried it on the dark and with the purpose on mind of WILDing. I got to try it as i've tried other techniques and i never got to the HI part (i think i went to the SP part though).