Use the playing card in another trick first. For example, use the simple Cross Cut Force (video below) to have your spectator choose the card out of an ordinary deck. Then take that card and put it into the Zig Zag Card frame, and do your magic!
How To Do an Easy Card Force:
Here is a FREE video lesson to teach you an EASY way to force a card, called the Cross Cut Force. Use this force anytime you need to control the selection of a card- it fools them every time!
For this trick, you'll need to "force" a card on your spectator. In other words, you need to make it seem like he has a free choice, but really you are making him take the card that you need him to take. There are many ways to force a card, including the Cross Cut Force. We also carry several books and DVDs to teach you the different methods.