With the fan facing upside down (bottom side facing up). Fold up the index cards to form the stand for the fan. It should look like a box with an open view of the fan. If you know how to gift wrap a box, this should be fairly easy. If not, look at my pictures. Straighten out two paper clips. Then bend a 90 degree angle at the middle of each clip. Tape the paper clips along the edge of the index card fan stand. The paper clips will reinforce the stand's structure.