I used a base coat of Seche Natural, 2 thick coats of Liquid Leather and a top of Seche Vite. When I was making my pick for this color, it took 4 thin coats of Liquid Leather to cover the nail and it still wasn't as opaque as my CND Blackjack, but again on the nail, it was only two.
Granted, I have a coat of Seche Vite over this but look how shiny this color is! As far as the "watery" goes, check near the cuticles, especially on my ring and pinkie finger - you can just barely see the nail under the polish.
In the shade, it's all about reflecting everything (mainly, my camera and my fingers, haha). I don't wear black alone - I always tend to pair it with something like a sheer shimmer or glitter or flakie.
Indoors with the flash and well, this picture just kind of makes everything run into each other... bottle, nails... whatever. :P
China Glaze can be found online through several etailers, including my favorite Head2Toe Beauty, Sally's Beauty Supply, and TransDesign.