Just keep flipping it over and over till you're back to the start.
The actual mechanism needed is the sides of the two templates. Eureka Craft Designs did not want to give you blank templates so have incorporated extra laying templates that can be used for your other card or scrapbooking projects. They have also added corner details which you can use to place your vellum etc onto cards instead of using glue. These can also be used on an A5 card to house your never ending card, making it the perfect gift as well as a card.
The above A5 card shows how you can use the corner details within the template. One of the corners have been drawn around and cut out of the front card. This so the never ending card, seen at the side can fit onto the front, making it a very special card and which will almost certainly be kept. Don't forget the corners are very useful to also use when attaching vellum to your cards. No need for glue!
The above book has been created by Sarah Louise from Tiggertastic. She has used the laying templates to give a 3D effect and make a beautiful note book.