Get everything you need before you start. Fill your cup up with room temp. Bottle water. Does not work with cold water.
Apply your base coat
Then apply a coat of white or a light color. Once that is dry you are going to tape the sides of your finger. ( I didn't do that do I don't have a picture)
Take the colors that you want and add one drop of each color. Repeat as many times as you want. The more you do the closer the colors are to each other.
Add any kind of design with your toothpick.
Stick your finger where the design is that you made. Leave your finger in the water.
Then take your Q-tip and clean the nail polish around your finger.
Take your finger out of the water then add your top coat and let dry!