<human>: Goal: How to create a simple sheath for a knife?

Which of the following methods is more reasonable for accomplishing this goal?

OPTIONS:
- Take two pieces of leather of differing size, use a box cutter to cut them to size, sew some thread through the center to secure them together
- Take two pieces of leather of equal size, use a box cutter to cut them to size, sew some thread through the perimeter to secure them together
<bot>: Take two pieces of leather of equal size, use a box cutter to cut them to size, sew some thread through the perimeter to secure them together