1. First pick up both sides of the shirt hem, as shown in the figure below.
2. Then, cross both sides, as shown in the figure below.
3. Pass the lower corner of the right hand side through the hole, as shown in the figure below.
4. Then, tighten both sides firmly, as shown in the figure below.
5. After tightening, pick up the two corners again, as shown in the figure below.
6. Then, tighten it up and down, as shown in the figure below.
7. Cross both sides as shown below.
8. Tell the left corner to go through the hole, as shown in the figure below.
9. Tighten both sides, as shown in the figure below.
10, that's enough. See the effect, as shown in the figure below.