Although there are many different types of routines that these special flower cards can be used for, the main routine revolves around a prediction.
You begin by writing a prediction on a paper napkin and leaving it in full view. You then show a stack of business sized cards with pictures of different types of flowers on them and have one selected in a very fair manner.
When the selected card is turned over it is seen to be a rose. You then reveal that what you wrote on the napkin was rose. But that is not all. You can proceed to twist the napkin into an origami