You think about how big the circles should be on the sides. Maybe you take a cup or a glass as a template. From this you make the two side parts. The length of the fabric is now calculated as described here:
Easy Denim Pencil Case Tutorial
You think about how big the circles should be on the sides. Maybe you take a cup or a glass as a template. From this you make the two side parts. The length of the fabric is now calculated as described here: