What is a flat wash? That’s exactly what Sketchbook Skool co-founder Koosje Koene will demonstrate in this week’s Draw Tip Tuesday.

Watercolor is one of the most versatile of art media. With even the most inexpensive child’s set of paints, you can create all different kinds of effects—highlights, intense backgrounds, fades, pure colors and shading, and this flat wash.

Can’t take the klasses right now? No problem; once you enroll, these online videos are yours forever to watch whenever you want.