For the base of these I used a bunch of sparkly Glam Polish colors. I randomly painted on bits of POW! (pink), CRASH! (dark blue), Below Zero (turquoise), Arctic Freeze (green) and Whirlwind (purple).
Once that was dry, I applied the swirl stencils and put on a coat of A England Camelot (the best one-coater black I've come across) and then HK Girl to smooth it out. The large swirl on my ring finger was a bit more finicky so the lines are a bit wiggly but the small swirls were a blast to use.
I wore these until my peel off base coat made them pop off. I can't wait to try these swirl vinyls again soon. I've seen some awesome manis with swirls over watermarbles that look really cool.
'Til next time...