Medium skills. You need yarn (Marks & Katten Nelly. Worsted, 10 ply, 9 wpi. In x-small size you need 200 gram, 340 meters or 372 yards. In small size you need 250 gram, 425 meters or 465 yards. In medium size you need 300 gram, 510,2 meters or 558 yards. In large size you need 350 gram, 595 meters or 651 yards. And in x-large you need 400 gram, 680 meters or 744 yards. You need more if you want longer skirt), crochet hook (4 mm/US G) and two clasps or snaps. Choose if you want to sew a lining or not, if you want, you will also need fabric. Crochet back and forth. Written pattern for the waistband and chart for the skirt. Five sizes: x-small, small, medium, large and x-large.
You find videos for the pattern here: https://www.youtube.com/watch?v=DEjOb1sWpqs and here: https://www.youtube.com/watch?v=XC9nzkPRX3w