Paint by Numbers for Adults Canvas Size: 16×20inches/40×50cm Paint by Number package: 3×brushes 1× color linen canvas 1×acrylic paint 2×hook 2×screw. DIY Paint by Number Steps: 1. Smooth the folds of the canvas with an iron. 2. Find the paint number corresponding to the canvas. 3. Clean the brush before changing colors. 4. The wrong color. You can draw several times when the paint is dry. 5. When the acrylics is dry add one or two drops of brightener agent. 6. Show your masterpiece. Paint by Number Note: Our products are semi-finished and require you to complete the work yourself.