Smooth along the edges and corners with 180-grit abrasive paper, removing breakout around the screws. Wipe with a clean cloth to remove dust, then use a mini roller to apply two coats of white paint.
Tip: When painting pegboard, use a roller for even coverage, but avoid overloading with paint to prevent the pegboard holes from clogging. It’s best to use a primer before applying strong colours, although it’s not needed for white