we used to do this when I was in highschool with Lotion.
Its great because the lotion allows it to come off the skin where it gets on your skin at.
You just take a little shallow container and fill it with the lotion, and drop your polish on it, whatever pattern you want, then swirl with a toothpick, dip in your nail, let it dry, and wipe off the excess lotion, shouldnt be much left on, the polish usually just sticks.
Her method is so much cleaner though!!!