The model was designed by Humiaki Huzita. The instructions can be found in several books, like The Practical Illustrated Encyclopedia of Origami, by Rick Beech and Origami, Easy-to-Make Paper Creations by Gay Merrill Gross.
There are also several instructions and videos available online.
The model display both sides of the paper, so I tried different combinations:
Black Card Holder: I cut a sheet of 9"x 12" from a 12" x 12"of textured Canson Expressions paper, that is the same color on both sides. I used the remaining strip of paper to add a stand, so the model can also be displayed on a desk.
Felt Card Holder: I used a 9" x 12" sheet of alligator embossed felt and a sheet of 9.5" x 12.5" gold wrapping paper. I glued them together back to back, leaving a 1/4" rim all around, that I used to make a hem to prevent the felt from fraying.
The result was great, but the material was very difficult to handle, as the felt was very thick and difficult to fold. In order to prevent unfolding, I had to glue the parts of the model that were not pockets .