Draw a 0,75 cm extra seam allowance on top of the required allowance.
Pin the skirt with the wrong sides facing. And sew together at 0,75 cm from the side.
Turn the skirt inside out with the right sides facing eachother. Iron the seam and pin it.
Sew the skirt together at 1 cm from the sides
Photo’s and tutorial by Bregje Spijkers – Jansen from Juul en Soof