Mind-blowing.
This rating given is purely on artistic style and creativity with said style, complimented by quality of detail and control. I cannot hesitate to say it is extremely rare to see such a simple idea executed perfectly, even allowing what would be little more than a movie to actually be educational as well (the opportunity to make your own, with easy-to-follow and 'obviously shown' directions that contain no hidden details, such as what you might find in an IKEA direction booklet).
When I was younger, I often did a little origami (nothing extensive), and this has made me want to go back and do some more ten years after I'd given it up. An excellent submission, and one you should be proud of.
-1 simply because of the music choice. Don't take it too hard.