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There comes a time in a scenic painter's life where they have to actually use some semblence of artistic talent, maybe in this case to paint an actual realistic portrait/intricate landscape. Because you are likly an MIT student who probably does not have enough time for any of that, the wiki recommends printing a picture of the painting (if portrait of actor, use publicity photos + coordinate with costume persons) with the large printer in the ensemble office, use white masking tape or white gauff on the back sides to reinforce corners, and painting over the portrait. If faces are too hard, the wiki recommends painting everything but the face. No one will be able to tell from 20 feet away except the wrinkling on the paper and slight glaze will make it look slightly like a painting.