How do you make a folding square out of paper?

The video describes making a square out of a rectangular sheet of paper (like A4) for origami. Here's how you do it:

1. Fold the paper: Take one corner of the rectangular sheet and fold it diagonally across the paper to the opposite side, creating a triangle. Make sure the edges align neatly.
2. Cut off the excess: You'll have a rectangular strip of paper leftover. Use scissors to cut along the edge of the triangle, removing the excess rectangular piece. You can use a pencil to trace a line before cutting if you prefer.
3. Unfold: Open the triangle. You now have a square.