Beginner Origami: The Folds and Bases to Learn First

Origami looks like hundreds of unrelated models, but almost all of the traditional ones are built from the same small vocabulary of folds and a few starting shapes called bases. Learn that vocabulary and a diagram stops being a wall of arrows and becomes a set of instructions you can actually read. Here is the core worth learning first.

Start with a true square

Every classic model begins with an accurate square, and a sloppy square is the most common reason a finished piece looks lopsided. If you are cutting squares from a rectangle, the largest one has a side equal to the shorter edge of the sheet; our origami size calculator works out the square and the offcut for you. A 15 cm (6 inch) square is the standard teaching size — large enough for clean folds, small enough to finish quickly — and thin “kami” paper around 60 to 70 gsm creases crisply without fighting you.

The two folds everything is made of

There are really only two folds. A valley fold brings the paper up and toward you, forming a trough like a V; a mountain fold pushes it down and away, forming a ridge. Every arrow in a diagram is one or the other, and diagrams use a dashed line for a valley and a dash-dot line for a mountain. Practise folding both crisply: line the edges up first, hold them, then run your thumbnail or a bone folder along the crease from the middle outward so no bubble forms.

Preliminary and waterbomb bases

Fold a square in half both ways and along both diagonals, and you can collapse it into one of two starting shapes. Bring the corners down and together and you get the preliminary base, a small square with an open, layered mouth — the start of the crane, the lily, and countless flowers. Push the sides in instead and you get the waterbomb base, a triangle that starts the classic paper balloon and many animals. These two bases begin a surprising share of all traditional models, so they are worth folding until they are automatic.

Squash and petal folds

From the preliminary base, two moves do most of the shaping. A squash fold opens a flap and flattens it symmetrically, like pressing a tent flat from above. A petal fold lifts a single layer up while the sides pinch inward, narrowing a wide flap into a point — it is the move that turns the preliminary base into the slender bird base. They feel fiddly the first few times; the trick is to pre-crease firmly along the lines the fold will follow, so the paper falls into place instead of tearing.

The bird base and your first models

Petal-fold all four flaps of a preliminary base and you have the bird base, which is one reverse fold away from the head and tail of the traditional crane — the model most people learn first and never forget. Good early projects, in rough order of difficulty, are the paper boat, the masu box, the jumping frog, the waterbomb balloon, and then the crane. Each one drills the folds above in a slightly different combination.

Habits that make folds clean

Work on a hard, flat surface, not your lap. Fold away from yourself so you can see the edges meet. Crease in one firm pass rather than several timid ones. When a step says to fold and unfold, make the crease sharp anyway — those pre-creases are what let a later collapse happen cleanly. And if a model goes wrong, unfold to the last base you recognise and restart from there rather than forcing a bent flap.

None of this takes special talent, only repetition. Fold the preliminary and bird bases a dozen times each, get comfortable with the squash and petal folds, and most beginner and intermediate diagrams will suddenly make sense — because you will already know the words they are written in.