To paint our Just Add Watercolor blocks, just splash your favorite colors onto the surface. The right brushes make a big difference (see my favorite brushes to use).
When your canvas dries, wipe off any excess paint. You can seal your finished piece to protect it if you want, but you don't have to.
PS: I'm not endorsed by SOHO watercolors, but I do love them. They are a great pigment for the price!
Maybe before you start a canvas, you'll want to practice on something little? The tags and cut-apart squares from the paper deck are a great place to start.
When you're feeling brave, step outside your comfort zone with the blanks. You can even stamp on it if you're not ready to freehand just yet.