Obviously, the hardest part about this look is the teensy-tiny strand of lights on the ring finger. Again, a striping brush will be the best way to try this at home, and you can start by painting the black loop across your nail. Let that dry fully, and then it's time to tackle the microscopic Christmas lights — a very very tiny detailing brush, or even a toothpick. Add the colours first, then use add the tiniest speck of white polish inside the lights to make them look like they're glowing.