You need a square piece of paper.

Fold the paper in half then unfold. Fold the paper along the diagonal then unfold.Repeat with the second diagonal.

Press the sides together gently.

Continue pressing the sides towards the centre.

Put the shape flat on the table.

Fold each of the four corners into the center as shown in the next three photos.

Fold the second one.

Fold the third and the fourth corners.

With a pencil mark the center. Fold the four horizontal corners into the center as shown.

Do the same on the other side

Use your finger to expand the little pocket as shown below. You are going to tuck the flap into the pocket. pocket flap

The flap must first be folded in two to make it small enough for the pocket. First fold

Make the second fold of the flap. 2nd fold

Fold and tuck the four flaps The folded flap is in the pocket

Expand the shape as shown below. Blow gently into the hole at one end.

Press the edges of the shape from corner to corner.

The cube is done