When all the pieces are attached, fold the long tab over and slide it through the gap between the card and the small rectangle. Glue the back of the lowest rectangle to the little rectangle on the card.
When you pull the tab the pieces should flip over one at a time. Attach photos or mementos to each of the rectangles so you can fan through them by pulling the tab.
To put it into the Memory Book glue it to the inside cover or to a white base page. Make sure you glue it as far in as you can to cover the writing (Xs and Os) if you are gluing it to a base page.