After much experimentation, I finally got my Crushed Candy to actually crackle. I'm not sure what it is about this particular color, my Lightning Bolt and Crushed Concrete crackled over numerous polishes with no issues. I found that shaking it vigorously about five minutes ahead of time, and dragging the polish (not the brush) over the nail in a medium coat worked the best. It was certainly a chore to do but it was totally worth it because I love LOVE, LOVE this color!

Base is Cover Girl Violet Vision. Crackle is China Glaze Crushed Candy.