WHAT YOU'LL NEED:
Step 1. Start by painting the timber slats with black acrylic paint. You may need to do a couple of coats to get a solid colour. Allow to dry completely between coats.
Step 2. Once paint is completely dry, stick washi tape in a geometric pattern.
Step 3. Use normal sticky tape to secure the ends of the washi tape to the back of the timber slat.
Step 4. Repeat until desired design is complete.