This is an old illustration from my undergraduate college days. I found it in a pile of old work in my study and thought it deserved to see the light of day one last time. I believe I used gouache paints and watercolors to create the illustration. I don’t think I even have any gouache paints anymore. Gouache is heavier and more opaque than watercolor. Back in college, gouache was the paint of choice for most of our instructors.