To set up this soothing wall design, wipe your drywall substrate thoroughly with a microfiber cloth to ensure the canvas is completely free of loose dust or construction particles. Apply two coats of a high-performance interior acrylic primer to provide a uniform surface for the heavy paint layers. Use a premium high-density microfiber paint roller to apply two coats of a specialized anti-microbial interior paint in a flat ultra-matte or velvet finish. Allow the first coat to dry fully for at least four hours before applying the secondary layer to achieve rich opacity and color depth. Keep the underlying trim work painted in the exact same color block to create a clean, contemporary line that unifies the vertical footprint beautifully.