To watercolor a rhino, I first need to sketch him holding whatever position he is in.
I apply mastic to where I want the whites reserved on the watercolor paper. You can see this as the shiny yellow in this photograph. Then I can begin to apply light glazes or layers of watercolor wash.
Now Mr. Rhino himself starts to get some shading using blues to imitate a gray skin tone for him in Cartoon Ville.
Grasses and more glazes are applied in the landscape.
Now I get out the Rapidograph to do some outline and crosshatch inking on this main guy.
You can see how crowded my drawing desk gets with one of these projects, painting supplies, and many photograph references.
Here is this image complete.