Layer it up! With this double decker photo card Impress the people you love by creating many of this one of a kind double decker photo card. Mix it up by selecting many of the beautiful paper pattern designs available for Holidays and Occasions. Not only will this be a card, it most certainly will become a keepsake, a gift from the heart.. Kathy Brown BASIC SKILLS NECESSARY Basic skills in card making. SIZING / FINISHED MEASUREMENTS 5 x 5 inch.