I recently saw a similar bookmark on one of the blogs - not sure where so I am unable to give credit where it is due. Anyway, I decided to fiddle around with it as the person had used only one of the die, folding it in half. I decided to rather cut the die using cardstock scored and folded over at the top to make it longer.
I had also seen a technique where you 'ink' up your stamp with paint, stamp and wait till it is dry. You then blend various colour Distress Inks over the card. When completed you wipe over the image to get any ink off - it is a resist technique. Pop a piece of magnet on the underside and the bookmark is complete.