There have been quite a few posts of what I call a shutter card (reminds me of a window shutter) but I have no idea who the originator of the card actually might have been. Once I saw it, I had to try to figure it out. I love puzzles and especially 3-D puzzles and knew I would be able to figure out the cut lines and fold lines.
The first one I tried was with 8 1/2 x 11 cardstock and although I made it work, I wasn't happy with the way my fold lines did not line up over each other. It didn't actually make the card look bad, but I knew there had to be a better way. That better way was using 12 x 12 cardstock. Cutting a piece to measure 5 1/2 x 12 made all the difference. After all, it is easy to divide 12 by three and that is very necessary for the making and folding of this card.
To begin then, start with a piece of 5 1/2" x 12" cardstock (I used textured but plain works equally well). Then cut two lines as shown in the following picture:
Once the lines have been scored on the paper, they are folded as shown in the following picture.
There are an infinite number of ways the card can be decorated. Once you have tried one, you'll probably wish to experiment and make it your own. The following is the way I chose to decorate the card with Designer Series Paper.
This is the way my finished card turned out:
I hope you'll have as much fun making this card as I did. The terrific thing is that even though it looks so large, it folds easily to fit into a normal medium sized envelope.