I also used two coats (under 2 coats of Ulta3 Lily White), and it still seems a bit sparse. All that aside, I do love the way it looks, black glitter is new to me (I'm a bit behind) and I love the idea of it.
I also topped my ring finger off with a coat of China Glaze Matte Magic, just to see what its like. And I can't really see a difference!
All bad things aside, I really love my Black Polka Dots, I think I need the white one too!