2.
Using a toothpick, draw a wavy line with black
nail polish on each nail. It can wave and it can loop; no need for perfection
here.
3.
Using red, blue and green polish, grab a
toothpick and dab on a dot of each, alternating colors. Make sure that the dots
(er, bulbs) touch the black line.
4. Voila! A string of Christmas lights.