All you need to get this simple nail polish design is black and white nail polishes (or whichever two colors you choose), tip guide stickers, and a topcoat. Tip guide stickers can be found at a local beauty supply store or online. Paint your base color, white in this case, over your nails and let dry. Once the color is dry, apply the tip guide stickers in a triangle shape—you can pick up a package that contains triangle-shape stickers or layer two straight guide stickers to fake it. Fill in the open space with black polish and let the polish dry completely. When you are sure the black nail polish has dried, remove the tip guide stickers and finish with a topcoat. Rock your at-home manicure at the office or as an understated accent on a formal occasion.