How to sew the skirt within elastic band
The first thing you need to do is to sew the side seam. Then you will need to process the belt and the bottom of the skirt. Put the skirt face down, and combine the slices along the seam. Sew the line on a sewing machine, receding the allowance, which was laid when cutting (1,5-2,0 cm).
Then cut the slices with the overlocker, in the finished workpiece you will have the allowances of 1,2-1,5 cm. If you sweep on the sewing machine, firstly trim the seam allowance with scissors. And the seam should be properly ironed, otherwise, it will look taut and sloppy.
Now you have to pin the belt of the skirt. Combine the slices of the upper edge and pin the together. If the fabric is crumbling and the top of the skirt is uneven, carefully trim it so that the top section of the skirt is flat. Then measure the top of the skirt and cut the belt (it will be the double length plus two cm on the seam allowance). The width of the band should be measured depending on the width of an elastic band. Calculation for the elastic band of 2 cm width: 2,5 cm x 2 + 3 cm (seam allowances) = 8 cm.
Sew the belt into the ring - fold the front side inward, and grind it with the seam allowance of 1 cm. Also, you should leave the small hole in order to pull the elastic band. Fold the belt in half and iron, fixing the fold.
Connect the belt with the upper cut of the skirt, the outer side of the belt should be to the front side of a skirt. Sew the belt to the skirt.
Now you have to pull through the elastic band. You can pull it with a safety pin, but make sure that the elastic band is not twisted. Then put the ends of the band on each other and sew it in the ring. You can shorten or lengthen the elastic band if necessary.
Now you have to process the bottom of the skirt. If you sew a semi-circle skirt, you can swept a lower cut on the overlocker, or sew a zigzag stitch.
Pictures taken from: https://www.craftsy.com/