Start with a square sheet of paper
Fold it in half to make a rectangle
Unfold it
Fold the top and bottom edges to the center line
Fold the paper in half again along the center line
Cut or tear the folded strip into two equal long rectangles
Take one rectangle and fold one corner diagonally to form a triangle
Fold the remaining strip over the triangle to create a second triangle
Repeat the folding pattern until the strip is fully folded into a compact shape
Make a second folded piece the same way
Rotate one piece so it is mirrored against the other
Place the two pieces together in an overlapping cross shape
Tuck the ends of each piece into the pockets of the other
Tighten the folds so the shuriken holds its shape
Flatten and adjust the points evenly