While the polish is still wet, press down the shells so you don't have stray pieces sticking out. Once the shells are in place, let the polish dry for about 10 to 15 minutes before going back with a top coat to seal in your look.
If covering all your fingertips in colorful crushed shells is too much for your taste, opt for one accent nail for a tamer version of this nail art. However you decide to wear it, be warned! This nail art starts many (great) conversations.