Here's a demo from my Watercolor College Class at Palomar College in North San Diego County. I started out with a Bistre...(explanation below)....underpainting. I used a traditional earth color, Burnt Sienna for the hue because I didn't have the time to boil the soot of wood.....just kidding! Burnt Sienna is a fine substitute for the process. I also suggested Raw Sienna for students who had a great deal of greens in their composition. This will allow the greens to glow.
The glazes were broken up into 3 value steps...light, middle, and dark values.