Waterfall studies...

Now into something new with my students, who seem a little perplex about the subject, but I hope they'll find it interesting at the end. Here we have small monochrome studies of waterfalls. I have difficulties to get the hand on pictures as support to our studies, as we can't go out in the bush sketching or painting. The bottom two are based on american artist Jeremy Lipking's work and light effects. I hope I'll be able to seduce my students to do color studies too and also create our own compositions in the same spirit...