I used 3 shades of Sally Hansen gel polish in purple to sponge on a gradient. I coated the nails with Seche Vite and allowed to dry.
I cut painters tape from the edge making a half circle (the part removed was the half circle leaving a long piece of tape with a "bite" removed) I cut the tape strip right down the middle of the half circle and applied them to the nails to mask where I was going to apply the moon. I used a no wipe gel top coat to paint a quadrant of the moon on the 2 middle nails and cured it.
Once cured I applied a chrome powder and stamped the bats on all the nails. I applied Seche Vite to all but the moon nails. I applied the gel top coat to the moon nails and cured.
I topped all of the nails with Out the door holographic top coat.