How can I create a scratch away art masterpiece using simple materials at home?

To create a scratch away art masterpiece at home, you will need a piece of paper, crayons or oil pastels, and black tempera paint. First, color the entire paper with the crayons or oil pastels. Then, cover the colored paper with a layer of black tempera paint. Once the paint is dry, use a sharp tool like a toothpick or a coin to scratch away the paint and reveal the colorful design underneath. Experiment with different patterns and designs to create your own scratch away art masterpiece.