1

Cut a 9.5x14.5cm piece of white cardstock and use a pencil to mark 1.3cm in on every corner of every side. Draw a line joining up the opposite sides then a smaller line on the other sides.

2

Cut out the rectangle sections on the shortest ends and wrap a 26x6.5cm piece of soft plastic such as a sandwich bag around it. Adhere together using a strip of double-sided tape – be sure not to have any tape stuck t