Rule

ID: photo of someone holding up a cushion in a double-sided sequin cover where the sequins are a different colour or pattern depending on what direction they are laying.

Here the background sequins are blue, and a pattern has been brushed in the opposite direction in the shape of a slug's head complete with optical tentacles (eyes at the ends of antennae), to reveal Nicolas Cage's eyes and mouth perfectly fitting in to give the slug a face.