The Iris Folding technique is not difficult. Originally the craft started by taking the insides of different coloured envelopes, cutting them into strips and using these to make cards. Of course any type or colour of paper can be used to create an Iris card. The books provide you with the patterns and the folding diagrams that allow you to create the different designs that make the Iris card so special and different. The books have many different card patterns and the finished cards look like a quilted card made with paper not material.