Although the interactive element of this type of card is fascinating, admittedly it was a bit fiddly to assemble. After a few practice runs I knew I would have to add some strength by using a double layer of cardstock for all the working pieces of the mechanism to ensure the iris would open and close smoothly. I should also mention that I used Cuttlebug's Tiny Bubbles embossing folder on the pieces of the iris to give the golf ball a cool dimpled texture but that may have created some of the resistance causing the need for the extra reinforcement of the mechanism.
This was my first time working with this style of shutter/magic iris card. Although initially I ran into some difficulty getting the mechanism on this card to work smoothly, hubby loved his birthday card so much that I guess I will be playing around with it a bit more so I can get better at putting this together. I am hoping to one day try this with a camera shaped card,