Step 1: Supplies
-Large cardboard box. You decide what size works best for you. It should pretty much cover the upper 3/5 of your body.
-Strong Scissors (Seriously! I broke 2 pairs of scissors doing this project!)
-Soda Bottle or some other type of plastic to cover the eye hole
-Thin strips of lumber ( I used door and window trim, about 3 in by 1/2 in)
Cut off the flaps (if your box has them) and cut right down the folds.
The picture shows is better than I can explain it.
Step 3: Rectangle to 'Oval'
Now start again, making another rectangle from the opposite side of the box. Then put your 'oval' on top of it and trace around it.
Cut that oval out. You should now have two ovalish shapes.
Note: The oval shape is somewhat optional. If you want it any other shape just trace out the shape on the other piece of card board.