(２５)
Then fold the square which has been circled.
In order to get easier to fold a crane, make mountain-folds on the dotted lines.
(２６)
Make mountain-folds like this picture.
Then turn the paper over as it is.
(２７)
After turning the paper over, fold four corners to the center point in the circled square.
(２８)
Fold four corners to the center point like this picture.
Then turn the paper over as it is.
(２９)
Make a bird-base in the different way from usual because connecting parts are long.
First, make mountain-folds on the dotted lines.
(３０)
Make mountain-folds like this picture.
(３１)
Then move the long part in the direction of the arrow.
(３２)
Move the long part like this picture.
Then fold the top square in the direction of the arrow.
(３３)
Fold the top square like this picture.
(３４)
Then make a mountain-fold on the dotted line.
(３５)
Make a mountain-fold like this picture.
Then move both sides in the direction of the arrows.
After moving both sides, the part that has been circled would be swollen.
Push the part from top to make creases.
(３６)
Make creases like this picture.
(３７)
Then move the center in the direction of the arrow to make a crease at the dotted line.
(３８)
Move the center and make a crease like this picture.
(３９)
Then move the flap in the direction of the arrows to make a crease on the dotted line.
(４０)
Move the flap like this picture.
(４１)
In the other direction, move the flap like this picture as well.
Then put the flap back.
(４２)
After putting the flap back, make mountain-folds on the dotted lines.
(４３)
Make mountain-folds like this picture.
(４４)
On the opposite side, make mountain-folds on the dotted lines.
(４５)
Make mountain-folds like this picture.
(４６)
Then make a bird-base.
Move the long part in the direction of the arrow while pushing the part which is shown by the arrow.
(４７)
This picture is halfway through.
(４８)
After moving the long part, it looks like this picture.
(４９)
Then complete a bird-base.
(５０)
The bird-base is finished.
