Have you seen Acetate Cards?
They are designed using an acetate sheet for the card base. My card is stamped with the Carte' Postale stamp set using Stazon Ink. (Stazon works best for non-porous materials) Whisper White is adhered inside and lined up with the Soft Sky & Blue Bayou cardstock which is adhered on the top of the card. The image on the top of the card is stamped with Blue Bayou. All supplies (except acetate) Stampin' Up! Have a great day!