By Alisa Burke. Easy Marbelized Paper. 1. Fill a tub (large enough to fit the watercolor paper) with 2-3 inches of water. 2. Using spray paint, mist the surface of the water (FYI- this should be done outside). 3. Add more color to the water. 4. Let the colors blend together, shake the tub or stir to create swirls & designs. 5. Place the paper onto the surface of the water & quickly remove. Spray paint dries quickly so work fast! 6. The result is a colorful, fast drying piece of marbleized paper.