Whirlwind White- Sally Hansen
Mermaid's Tears- OPI
Planks A Lot- OPI
I really thought this was going to turn into a major nail fail, polishes were coming out all streaky, but I LOVE the end result. The design was done with a small domed paint brush. (It is similar to the one I did a while ago here.)
You start by painting your nails, then with the paint brush paint a tall line in the direct center of your nail and have each of the ones beside it slightly shorter. The polish doesn't have to go all the way to the tip either, just as long as the top is nice, the rest is going to be covered by the next colour.