Gouache is the perfect sketching medium - it dries instantly like watercolor, but can build up to intense, opaque color like oil. Here are a few tips if you’ve never tried it. 1. Begin with large, flat shapes - do not focus on the detail or rise you’ll get overwhelmed by it. If you work background to foreground, you can always save the detail for later once you’ve established your lights and shadows 2. Begin transparently (add a lot of water to your gouache to make it behave like watercolor), an