How to Do a thumb or index card fan
This video tutorial shows you how to create a fan using a pack of playing cards. Hold the cards firmly using the thumb and four index fingers of your right hand. You then drag the cards across from left to right using either your thumb or index finger. In order to snap the fan closed with your right hand you should use the fingers on your right hand while holding down firmly with your right thumb, in order to close the fan. The presenter cautions that you should close the fan swiftly as the technique fails if your fingers move too slowly.