Wait until your nails are compleatly dry before placing the stickers on them. I found that the NYC nail polish dries quickly. Once you have the stickers in position, paint on your top coat; two coats should make it perfect.
The Revlon polish takes a little longer to dry so just be really patient and keep the stickers on for a while. When you are ready, carefully peel off the stickers and brush on the clear top coat.You can use ANY colors for this! If you use a soft white for the base color and a light pink (like Pink Lingerie) for the top, it makes for a great flipped French tip look.