How to make an origami happy coat.

2. HAPPY COATS
If you've seen a Japanese festival like an Obon Festival, you will probably
noticed some people wearing these happi coats. They are straight-sleeved
cotton coats generally worn during festivals. Taiko (Japanese drums)
players will often wear these. Sushi chefs and servers may sometimes wear
them too.
This origami happi coat can be used as a decoration in front of a greeting
card.

3. ORIGAMI HAPPI COAT STEP 1
Start with a 15cm x 15cm square origami paper, colour side down.
Fold in half on the vertical axis. Crease well and unfold.

4. ORIGAMI HAPPI COAT STEP 2
Fold paper in half, this time on the horizontal axis.

5. ORIGAMI HAPPI COAT STEP 3
Now fold about 1cm up from the bottom edge of the paper.
Crease well and unfold.

6. ORIGAMI HAPPI COAT STEP 4
Now fold both sides to meet the crease you just made.

7. ORIGAMI HAPPI COAT STEP 5
Repeat Step 3 to make that fold again. Crease well.

8. ORIGAMI HAPPI COAT STEP 6
Flip paper over. Fold down the top so that the edges on both sides are lined up.

9. ORIGAMI HAPPI COAT STEP 7
Now fold both sides to meet in the centre.

10. ORIGAMI HAPPI COAT STEP 8
Make a fold where indicated below. Crease well and unfold.

11. ORIGAMI HAPPI COAT STEP 9
Pry open the "pocket" on each side.
Then press the paper flat.

12. ORIGAMI HAPPI COAT STEP 10
Flip paper over. Your origami happi coat is complete!
Source: http://www.origami-instructions.com