One of the final assignments for 3D Students was to take a piece of of a photo and blow it up- to three times its original size- and then interpret it in relief, using a mix of materials. I have done this in the past and not allowed the students to see how they fit together. Why? I don't know now...because they came out so nicely when the students could work together! The original photo (broken in half, then half again) is of baobab trees. For some reason I deleted the original!