Learn the basics of watercolor painting and letter writing, then fill in ready-to-mail postcards with paint. (Simply add a stamp!) A 16-page instruction book gives beginner-friendly painting tips and techniques. Artwork is themed around special occasions, sharing kindness, or just to say hi. The book comes in a backpack-stashable kit with six watercolor paints, a palette, and a paintbrush, so you can make like Matisse on the go!