From the waist markings you just made, measure down the desired length you want for the skirt on the sides and center and mark. I want my skirt length to be 21 inches including my hem, so I’m measuring down 22 inches.
Make a couple more marks between the center and sides. Connect the markings to form another quarter circle.
Now you can cut along the lines and the waistband.
You might want to make a line with a ruler and fabric marker before cutting to make sure the cut is straight.
Unfold the skirt to a half circle. In the center of the waist, cut the top layer of fabric all the way down to the bottom of the skirt.