This simple design can be accomplished using a paint brush and acrylic paints. Just lightly flick your brush across your nail at an outward angle. Using acrylics allows you to wash off your mistakes. If you have a steady hand, use nail polish.
I don't know how I feel about "upcycling" a book and book crafts in general but this is pretty cute! Upcycled Zippered Book Clutch – Free Sewing Tutorial by See Kate Sew + Upcycled Sewing Projects by Betz White