Also, a serger was used, but it's not mandatory. You can also use the zig-zag stitch off your machine if you don't have a serger.
Here's a sneak peak:
Sample 6 block from the instructor's creation.
Another view: 6-block top made by the instructor.
Another Origami sample-this one a dress.
Getting it together.
Finished product of a 7-block.
Finished product of a 6-block.