Author:Mark Kaufman
Mark Kaufman is a partner at Vivitiv, an issue oriented design firm providing creative services for organizations involved in housing, technology issues, education, the environment, and the arts. His illustrations have appeared in The New York Times, The Progressive, National Lampoon, The Stranger, and The Oxford American. Mr. Kaufman writes and draws the comic strips American Affairs Desk and I Drew This Thing. Mark is Vice President Communications, ICON9 The Illustration Conference and is an editor at Illustration Age.
Mark Kaufman's Illustration Site
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Vivitiv Issue Oriented Design
ILLUSTRATION AGE 
the layers in this are great. brings some depth for that hand made watercolour
This is really incredible. I’m going to have to share it with my fifth grade students. They have little to no self control when it comes to using markers, but look what you can do!