Prepare your workspace. Set up a clean, flat workspace with plenty of room to spread out the umbrella. Place a drop cloth or newspaper under the umbrella to protect your surfaces from paint. Open the umbrella partway so the fabric is taut but easy to access from all angles.
Plan your design. Lightly sketch your design with a pencil on the umbrella if you’d like a guide, or go straight in for a more spontaneous look.
Begin with one color and start painting and filling in your shapes with fabric paint. Apply the paint in thin, even layers, and let each layer dry before adding another if you want more opacity.
Once your first color is dry, switch to your next color and continue adding shapes and patterns around the umbrella.
After you’ve finished painting, allow the umbrella to dry completely for at least 24 hours.
Optional: Apply a fabric sealant for extra durability and to keep your artwork intact over time.