Check out this quick tip from international educator Melissa Garcia for erasing visible fill...
Nail Art Tutorial: Lace Nails
Your colors don't always have to be opaque. By laying down a thin black base over black designs, you can create a lace-like effect. Follow along as Sarah Elmaz of Get Buffed shows how:
1. Start with prepped nail (base coat required if on natural nails).
2. Paint a black gel polish border around entire nail with a striping brush.
3. Add dots with a dotting tool (or crisscross pattern for a fishnet look).
4. Cure before applying next layer.