American artist and art teacher who, with his wife Mary Willenbrink, wrote the popular Absolute Beginner series of drawing and painting guides.
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Watercolor for the Absolute BeginnerA clear, encouraging introduction to watercolor painting, from choosing materials to finishing complete landscapes step by step · 2003
Drawing for the Absolute BeginnerA friendly step-by-step course in realistic pencil drawing, from holding the pencil to shading, perspective and composition · 2006