For the Marc by Marc Jacob-inspired bow:
1. Paint your entire nail with a champagne-coloured polish.
2. Use a dotting tool and gold polish to dot on the bow shape: start with the middle circle and then draw two triangles out of each side.
3. Use a smaller dotting tool and silver polish to add polka dot rhinestones onto the bow.
4. Outline with a black nail art pen.
Marc by Marc Jacobs Pave Bow studs ($38, ssense.com)