Magic Trick - Magic Painting

You show a sheet of paper A4 in size and some smaller pieces of different coloured paper. You say you are going to make a picture of a wizard. You open the big piece of paper and put the small pieces on top and fold the big piece of paper into a small packet with the pieces inside. You say the magic word open the paper up and it has changed into a coloured picture of your Coloured Wizard. Needs a little handling practice. Everything supplied.