Mastering Crosswise Folding: A Step-by-Step Guide

2. Fold the paper in half. Bring the top edge down to meet the bottom edge, and crease the fold with your fingers.

3. Unfold the paper.

4. Rotate the paper 90 degrees.

5. Fold the paper in half again. Bring the left edge to meet the right edge, and crease the fold with your fingers.

6. Unfold the paper.

7. You have now folded the paper crosswise. The first fold created a valley fold, while the second fold created a mountain fold.