Artwork of the Week, 11/19


Nathan Duffy

Self-Portrait, 13 x 20″, really thick acrylic.

Photoshop: Image > Adjustments > Posterize (At least 7 values)

Grid transfer to enlarge the drawing

Separate, draw, and number different values (1=lightest, 12=darkest)

Paint with monochromatic acrylic

It’s a pretty simple lesson, geared toward a quality end product, and it has usually been very successful for my students.

Note: If you don’t have Photoshop, sign up for an account at  You can Edit > Sketch your images, and get a very similar effect that will still work.

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