Several foreign crafters, have made a set of cards, using only one sheet of patterned papter. The cards should all be different. You can use many sheets of cardstock and different embellishment, but only one sheet of patterned paper. These cards are often called "One sheet wonder".
Here, I have used Majas new Christmas collection, I wish.
The 16 different cards:
I decided to post photos of the different cards in sets of two.