How To Make A Paper Box -

Fold the square in half diagonally both ways, then unfold, creating an 'X' shape.

Sharp, firm creases make the final shape easier to assemble. how to make a paper box

Unfold two opposite corners (e.g., top and bottom) and leave the other two sides folded down. Fold the square in half diagonally both ways,

Thin to medium-weight paper works best; heavy cardstock can be hard to fold. creating an 'X' shape. Sharp

Fold the right and left edges to meet at the center crease, then unfold. Repeat with the top and bottom edges, then unfold. You should now have a grid pattern on the paper.