Thanks, Monica, for your comment the other day! It's true, I haven't painted any water in 20 minutes yet. I like landscapes, and though they tend to be pretty ambitious for a 20 minute sketch, here's a quick waterfall painting (watercolor, 5 1/2" x 8"). My reference was a photo I took on a hike at one of the lovely (NY) state parks some time ago. This was a fun sketch, the time flew by. Perhaps I would add more detail in the rocks and water with a few more minutes, but there's enough to get the feel of the place here.