You put water in a bowl and drop random colors of nailpolish in it. then you stir it with a toothpick and put petroleum jelly on your fingers, so that the nail polish only gets on your nails. then you stick your fingers in the bowl.
grey polka dot nails- using a toothpick dip the tip of the toothpick in black nail polish and dap it on to your nails. When they're dry you can then paint a clear top coat on them for some extra shine.