This is a fun and easy design. The polishes I used were:
China Glaze: Pink Voltage
Confetti: Black Tie
You will need: scotch tape, scissors and two colors of nail polish.
Start with two coats of the neon pink.
Cut a triangle out of a piece of tape. (Note: put the tape on the palm of your hand to remove some of the stickiness so it won't pull up your polish.) Place the tape on your nail with the tip of the tape near your cuticle. Then paint the entire nail black. Remove the tape as soon as your done so it won't pull the polish off.
Use a top coat and enjoy your design!