I saw this cool card on a blogger website and figured out how to recreate the same idea - there is a slider component along the bottom.
The base card is a gatefold and it has been sized to fold flat for a standard A2 card. I chose old floral paper that I had in my stash and used both the front and back patterns. The slider on the front has a butterfly attached to it and that can slide back and forth using the tab on the right side. I only added a simple sentiment as I wanted this card to be able to fold flat for mailing. There is a panel on the back to write a message.
Enjoy,
Alyson