Paint your nails white. I used LA colors french manicure. Let them dry completely.
Gather 5 different neon colors. This one is a Claire's nail polish.
This one is sinful colors #53 Summer Peach
This one is Sinful Colors #959 Fly Away.
This one is also Sinful Colors. It is a striper though, but I'm going to make it work and paint my nail with it anyway. #1627 Sour Grapes
This one is also a Claire's nail polish brand.
Paint over the white with your colors and you're done!