I used one coat of Wet N Wild Black Creme and three coats of Go Deeper. Go deeper didn't give me any trouble at all. I wanted my nail to be covered in as much glitter as possible which is why I used three coats, but it was just as pretty with one coat over black.
I'm curious how it looks on its own, and how many coats I am going to need if I wore Go Deeper on it's own. I'll probably swatch this on its own sometime in the future after I post the other three polishes from the collection.
I can't wait to show you the other three!