This technique uses saran wrap to cause a marbled effect on the nails - very American Apparel-esque.
1- Cut 10 small squares of saran wrap (one for each finger). Pick two fun shades of polish to marble with
2- Paint all of your nails with the most vibrant color out of the two polishes. Make sure your nails are completely dry before executing the next step! --
3- Paint a finger with the second color and right away -while it is still wet- take your first clipping of wrinkled up saran wrap and dab the wet paint. This will cause the marble effect. Don't stress if the paint gets all over your skin, clean up is step 4. This is meant to be fun and messy so just embrace it!
4- Repeat the -above- process on every nail on ONE HAND (wait until you are completely done with the marbling process on one whole hand and it is perfectly dry to start the next hand)
5- Time for damage control!! Take a Q-tip and soak it in nail polish remover, then clean up any painted skin around the fingernail. Use ONE Q-tip for each finger.
6- Once one hand is dry, apply top coat and wait for it to completely dry off. Now repeat the process on your other hand or have someone you trust do it for you if you are the least ambidextrous person in the world like me!