Dip in nail powder application
That's how it's done:
First you paint a layer of base coat on the dry nail. Before it has dried, you dip the nail into the colored powder. Simply tap off the excess amount or wipe it off with a brush, then a top coat provides the finish.
If you want a thicker layer of color, you can simply apply a layer of base coat after dipping into the color powder and then dip back into the color powder. This process can be repeated as often as required until the desired result is achieved.