Shrink plastic sheet is a kind of plastic shrinkage film, size specifications can be customized according to the needs, it is rough and smooth on both sides, the rough side is used to design creative, can want you to draw a picture (can also use the printing or painting), and then use scissors to cut out, (picturesize than you want work results is four times bigger, because through the heating will shrink to 1/4 of its original size), preheat the oven, then cut out works in the oven heating, when reduced to the size you want is out, if not smooth, insulation material needs to get a flat pressing it flat, it cools you can see your own creativity!