Lay out the fabric.

Use the sewing tape to measure the required width of the skirt which would be the width of the skirt x2.

Use the sewing tape to measure the required length which would be the length of the skirt plus 2 inches.

To ensure a straight line is cut, make chalk markings on the left side, the middle, and the right side. Use chalk and a ruler to make a connected line.

Use sewing scissors to cut the material in line with the chalk marks.

Repeat step 2 to ensure you have material for the front and back.