I've got a quick layering experiment to show you today - Essie Shine of the Times layered over Elixir Lacquers Bad Kitty. Shine of the Times is a flakie, and Bad Kitty is a purple and teal duochrome.
Both applied beautifully - Bad Kitty is sheer, so I had to use three coats. Shine of the Times, on the other hand, is really dense and loaded with flakies, so I only had to use one coat.
I love this combo so much! It's much softer than anything I usually wear, so it's a nice change. It would have been the perfect wedding mani had I thought of it a couple of years ago, lol!