Metallic nails are huge this summer, and this minimalist mani is a great example of nail art for mere mortals. Slather on a base coat, followed by a coat of silver metallic polish. Let your nails dry completely, then place a piece of painter's tape at an angle, leaving a small sliver of nail on one side. Paint a thin coat of white polish on the exposed part of the nail. Let it dry completely before repeating on the other side with black polish. Finish the look with top coat.