This very cool technique was found both on YouTube and SplitcoastStampers. It's made with plastic from a grocery bag, so it's one way of recycling those bags instead of sending more plastic to the landfill.
The link for the YouTube video is: Slider Card by Dawn on YouTube
The link for the SplitcoastStampers tutorial is: Slider Card by Beate Johns
The stamps are all by Close to my Heart except for the butterfly, which is one of the Studio G clear stamps from the dollar bins at Michaels.