These cards feature butterflies which were stamped and black embossed on calendar pages!! You can easily reuse calendar, junk mail or magazine pages by stamping bold images in areas of overall colour/texture or where a change in colour would be appropriate for your image. The white butterfly was stamped on a snowy road and the blue one on the water of an ocean scene.
They were neatly cut out and traced on the back with a black Sharpie to remove the white line of the paper. Neatly layered onto black cardstock and arranged as desired above the greeting which is printed on the card front and revealed by ripping the embossed layer. I added some dots with a white gel pen. Some in the class chose to cover up the greeting by not ripping the embossed layer in which case a greeting or accent could easily be added later.