The glitter is very dense, so you get really good coverage in only one coat. But, it is difficult to get even coats. Your first brush stroke is pretty dense, but subsequent strokes are sparse. So, be sure to re-load your brush for each stroke. From left to right below, you are looking at one coat, then two coats, one coat over white (OPI Alpine Snow), and one coat over black (ChG Liquid Leather).
|L to R: One coat, two coats, one coat over white, one coat over black|
|L to R: One coat and two coats with no top coat|
|L to R: One coat over white, then black with one layer of top coat|