One Square of Paper and a Sharp Crease
Origami is the art of folding paper into shapes. The word comes from Japan. It joins two Japanese words, one meaning "fold" and one meaning "paper." Many origami folders try to make a bird, a frog, or a flower from a single square sheet. In the traditional style, they use no glue and no scissors.
Good origami depends on one simple skill, which is a crisp crease. To make one, fold the paper so the edges line up exactly. Then run your thumbnail along the fold and press it flat. A sloppy fold makes all the later folds drift out of place. A sharp one keeps everything neat.
Origami models are built step by step. A common first step is to fold the square in half to make a triangle. Other steps make a small point or turn the paper inside out. A paper crane, for example, takes many folds, and each fold must be made in the right order.
Paper choice matters, too. Thin paper folds easily and holds tiny details. Thick paper is stronger but can be harder to fold many times. Many folders keep a pack of square paper in a bag so they can fold whenever they have a quiet moment.