You can also use tulle and/or those mesh bath puffs. I do this with gel polish. 1. Prep
2 base and cure
3 base color of your choice cure
4 put down mesh that is a bit larger than tulle, (mesh bags that produce comes in works well). Apply your medium color by sponging it on with a makeup sponge, cure with mesh still on nail
5 remove mesh, next apply tulle and sponge darker color and some of the base color over tulle. Use a light touch. I also like to use gold to accent if I'm doing a brown snake skin look, or silver if I'm doing it another color. Cure without tulle
6 add top coat and cure again.