How to. One of an origami basic technique "inside reverse fold"

If you want to make origami, you have to learn some techniques.
Today, I introduce one of them.

******** Inside reverse fold ********

1. Prepare a sheet of paper.Need not necessarily be square.

2. Fold in half.

3. Fold the corner towards the edge.

4. Unfold.

5. Push the corner inside as the middle layer.This is "inside reverse fold"

6. Complete.

This technique is very important.It will appear in various cases.
Certainly, please learn and enjoy origami.