1. Prepare a handkerchief and two pieces of string.
2. Fold the handkerchief in thirds.
3. Place the handkerchief so that it is longer in width.
4. Vertically place the string on a third from the left edge.
Do the same on the other side.
5. Fold the handkerchief using the string as a crease.
Do the same on the other side. At this point,
insert the later folded fabric inside the hole made in the first folded one.
6. Tie the string with the fisherman's knot to make a loop.
Do the same on the other side.