How do I start origami, and why do my folds come out wonky?

Origami accumulates error — a fold two millimetres out at step three is a centimetre out by step twenty. The bases worth learning, the paper that helps, and the precision habits that fix everything.

Difficulty: beginner
Time: 30 min
Read: 5 min

Short answer

Fold on a hard flat surface, line the edges or corners up exactly before you crease anything, and crease firmly with a fingernail from the middle outwards. Learn the standard bases — kite, fish, bird and waterbomb — because most traditional models start from one of them. Use proper thin origami paper, not printer paper.

Origami looks like a dexterity skill and is actually a precision skill. Every fold is a reference for the next, so a small error early is multiplied through the whole model. The people whose cranes look crisp are not folding more carefully at the last step — they were more careful at the second.

What you'll need

Thin square origami paper
A hard flat surface
A bone folder or a fingernail
Patience for a second attempt

Step by step

Use the right paper.Origami paper is thin and holds a crease sharply. Printer paper is thick, springs back and becomes impossible after a few layers, which is why a model that works in a book fails at home. Thin paper is the single biggest improvement available.
Work on a hard flat surface.Folding in mid-air guarantees inaccuracy. A table lets you align the edges precisely and press the crease flat, and it is the difference between neat and approximate.
Align before you crease.Bring the edges or corners exactly together, hold them there, and only then press. Almost every wonky model comes from creasing first and adjusting after, which cannot be undone.
Crease from the middle outwards.Hold the aligned fold, press down at the centre with a fingernail or bone folder, and run outwards to each end. This keeps the alignment while the crease is made rather than pushing the paper out of line.
Crease hard.A sharp crease is a reference line for every later fold. A soft crease moves, and models built on soft creases lose their shape and will not hold the final form.
Learn the standard bases.The kite, fish, bird and waterbomb bases are the starting point for a large proportion of traditional models. Folding each a dozen times means most instructions begin at a shape you already know how to make accurately.
Learn the two symbols that matter.A dashed line is a valley fold, folding towards you; a dash-dot line is a mountain fold, folding away. An arrow shows the direction. Almost all diagrammed origami uses this convention and it makes any book usable.
Look at the next diagram before folding.The following picture shows what the current step is supposed to produce. Checking it before you fold catches misread instructions immediately, which is far better than discovering it four steps later.
Fold the same model repeatedly.Precision comes from repetition rather than from care. The fifth crane is dramatically better than the first, and the tenth is better again.

Tips

Start with the crane, the boat and the jumping frog. All three are traditional, well diagrammed everywhere, and each teaches a base you will use again.
If a step is impossible, you have almost certainly made an error two or three steps earlier. Unfold back to the last point you were confident about rather than forcing it.
For a model with many layers, use larger paper. Small paper is not easier — thickness at the centre is what defeats a small complex model.

Common mistakes

Using printer paper — It is too thick, holds a poor crease and becomes unmanageably bulky after several layers. It also is not square, and an unsquare start puts every later fold out.
Creasing before aligning — A crease is permanent. Adjusting the alignment afterwards leaves a ghost crease in the wrong place, and every subsequent fold measures from the wrong line.
Soft creases — The model will not hold its shape and the paper springs back. Origami relies on the paper remembering, and a weak crease does not remember.
Pushing through a step that will not work — The error is earlier. Forcing a fold that does not fit tears the paper and produces a model that never recovers. Unfold and check.

If it doesn't work

The model is lopsided

Cause: Accumulated small misalignments from early folds — Fix: Start again, aligning each fold exactly before creasing. Errors compound, so the early folds matter far more than the late ones.

The paper is not square

Cause: Cut paper, or printer paper used as a square — Fix: Fold a corner over to make a square and trim the excess with a straight edge. A model built on a rectangle mistaken for a square never comes out right.

The last few folds are impossibly thick

Cause: Paper too thick, or the model too small — Fix: Use thinner paper or a larger sheet. Thickness at the centre is the practical limit on complex origami.

The model will not hold its shape

Cause: Creases too soft, or paper too springy — Fix: Crease much harder with a bone folder. For display models, a light spray of size or thin paste stiffens the finished piece.

You cannot follow a step in a book

Cause: A misread symbol, or an error earlier — Fix: Check whether the line is a valley or a mountain fold, and compare your model to the next diagram. Video instructions for the same model resolve most ambiguities.

Questions people ask

Does the paper have to be square?

For traditional origami, almost always, and the accuracy of that square matters. There are whole families of models designed for rectangles and for dollar bills, but a model diagrammed for a square needs a genuine square.

Is coloured paper on one side worth it?

Yes — standard origami paper is coloured on one side and white on the other, and many models use that contrast deliberately. It also makes it much easier to tell which way you have folded.

How do I make a model stay folded?

Sharper creases first. For a display piece, a light spray of starch or a thin paste applied after folding stiffens the paper permanently, which is standard practice for exhibition work.