Start with a square sheet of paper
Fold it in half horizontally, then unfold
Cut or tear the paper into two equal rectangles
Fold each rectangle in half lengthwise
Fold each strip diagonally at one end to make two opposite shapes
Flip one strip and fold the other end diagonally in the opposite direction
Repeat with the second strip, making a mirrored pair
Place the two folded strips crosswise over each other
Tuck the ends of each strip into the pockets of the other
Tighten the folds so the shape locks together
Flatten the center and adjust the points evenly