Preheat your oven to 170ºC. Cover a baking tray in tin foil. Using pen or coloured pencil, trace the design onto the rough side of the shrink plastic sheet.
Cut out your designs, place them on the baking tray and in the oven. The heat will curl and shrink your designs. Within a minute the plastic will uncurl and lie flat on the tray. Remove from oven.
Using jewelry glue or superglue attach earring posts to the back of your designs. Leave to dry, then wear and be admired!