I've seen this style of manicure on pinterest a couple of times and after failing a few times trying to recreate it I finally got one to turn out ok! It's not perfect but it's a damn sight closer than the other ones I tried before.
I started with 2 coats of Sinful Colors Happy Ending, an apple green with golden/lime shimmer. It's beautiful, far nicer than the camera chooses to show. Then using Barry m Lychee and a dotting tool I dotted on a swirl design leaving enough space to add Catrice Pimp my Shrimp on the inside.
I switched the same colours around on the thumb and I think I prefer using a light polish as a base. I think the swirl design shows up much better. Lesson learnt for next time I suppose!