(２２)
Move the paper in the direction of the arrow to make a valley-fold on the top part which a mountain-fold is on.
(２３)
If you push the flap with making creases like this picture, it will get easier to make a valley-fold.
(２４)
This picture is halfway through.
(２５)
Make a valley-fold like this picture.
Then turn the paper over.
(２６)
Make the bottom four cranes while folding four flaps in the direction of the arrows.
(in a clockwise direction)
However, if you make one crane while folding one flap, other flaps will be unfolded.
Therefore, fold one flap when making one crane.
Make a crane and then revert it back to a square
In this model, the more you complete cranes, the smaller it get space to make a crane.
Also, it get easier to put pressure on connecting parts.
Therefore, repeat steps which you make a crane and then revert it back to a square.
After making the 4th bottom crane, complete each crane again.
(２７)
Start with folding the circled part.
In order to get easier to fold a crane, make a mountain-fold on the dotted line.
(２８)
Make a mountain-fold like this picture.
(２９)
Then make a star-shape while referencing the next step.
(３０)
If you make creases of a star-shape near the top crane neatly, connecting parts will be put pressure.
Therefore, make creases until right-before the top crane.
(Try not to make creases near the top crane.)
(３１)
After making a star-shape, move the left and right to the center in order to get easier to make a bird-base.
(３２)
Move the left and right like this picture.
(３３)
Then make a bird-base.
(３４)
This picture is halfway through.
(３５)
The bird-base is finished.
(３６)
This picture is taken from the back side.
Make a bird-base while folding the flap in a clockwise direction like this picture.
(３７)
In order to get easier to fold a head/tail, lean the bird-base to the right.
Move it carefully so that connecting parts don’t get pressure.
(３８)
Lean the bird-base like this picture.
