How to Paint Woodgrain Texture 1 Canvas Flat Paintbrush + Small Round Paintbrush Acrylic Paint (black, white, brown, yellow) 2 dabs white paint + 1 dab brown paint + 1 dab yellow paint Sweeping brushstrokes. Paint horizontal layers of all four colors. Don’t rinse your brush between colors. …but use a wet brush to soften lines. Use the brush tip for thin lines. Make oblong wood shapes. Accentuate your boards. Charming!