It depends on the type of knife as there are several different types of locks.
Lockbacks-push the spine of the knife in a bit near the back while folding the blade.
Linerlock-push the liner at the bottom in while folding the knife.
Slipjoint-are usually held open by friction, so simply close it
Ballisong-carefully flip the blade over then fold the handles over it followed by engaging the latch.
where you fold a petal origami is you cut some paper in half and then you roll it up
you fold it
Origami, of Japanese origin, is a nice way to fold paper into recognizable figures. So, you fold paper.
who was the first person to fold origami
Yes. According to the Related Link: ; origami : 1956, from Japanese origami, from ori "fold" + kami"paper."
Origami uses the power to fold, so that means it goes in with geometry
Fold the paper.
That fold has a name of the Blintz fold.
Mountian fold,valley fold,fold and unfold arrow,fold in front of arrow,fold behind arrow.
Below is a related link to a video tutorial on how to fold an origami Spider .
its a mountain fold.look it up mountain fold online or a origami book
You can see the diagram and fold.