
In origami inside-reverse-fold, the tip of the paper tucks between the open side. The fold lies between the front and rear layers of the paper.
The finished inside-reverse-fold has two mountain-fold connected to the spine. Though, the fold uses an origami valley-fold for pre-creasing.
The fold in origami inside-reverse-fold is in the opposite direction of origami outside-reverse-fold. The inside-reverse-fold is more common than the outside-reverse-fold.
The origami inside-reverse-fold is often used for:
– Head, feet, and tail of the origami animal models.
– The beak of the origami bird models.
Example of inside reverse fold
The origami inside-reverse-fold uses an origami valley-fold for pre-creasing.
Step 1: Make an origami kite base.

Step 2: Valley-fold the top-right edge to meet the opposite edge. Now, the paper is ready to make an inside-reverse-fold.

Step 3: Valley-fold the top tip of the paper.

Step 4: Unfold the fold done in Step 3.

Step 5: Open the layer and tuck the tip between the two layers of the paper along the crease made in Step 3.

Step 6: Flatten the paper, to form origami inside-reverse-fold.
