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It is a pen and ink drawing that I scanned and added the background and color in photoshop. I like doing collage work, so the background is a collage of digital circuitry stuff. I add color and sometimes textures to some drawings to make them feel more finished. See it explained a little here: https://steemit.com/sketchcrazed/@mrsomebody/5y8pey-sketchcrazed-surreal-lurid-unzipped