I started with two coats of Barielle Myrza's Meadow, a light, grassy green with tiny holographic glitters. The two coats I used weren't quite enough for opacity, if I was wearing it alone, I'd have used three.
Then I added a gradient using a make-up sponge and Barielle Teaser, a medium, slightly teal toned green creme. I'm wearing no topcoat on this picture, that's why the gradient still looks a little coarse (topcoat helps a lot to make a gradient look softer).
For a little "bling", I then added one coat of Orly Mermaid Tale, a clear base filled with green hexes in various sizes and shades (even some holographics), and one coat of Essence Better Than Gel Nails Top Sealer for a smooth finish.