The finishing instructions were missed off and should read as follows:
Sew up sole seam.
Sew on buttons to cuff to correspond with buttonholes.
Ease cuff onto top of sock allowing a 1cm overlap for the buttonholes to line up with the buttons.
Cast on 208 stitches in Yarn A.
Row 1 K2tog to end. [104 sts]
Row 2 P2tog to end. [52 sts]
Row 3 Knit.
Row 4 Purl.
Repeat Rows 3 and 4, four more times.
Cast off knitwise.
Sew seam of tutu at the back using Yarn A.
Sew the Tutu around the Ballerina’s tummy using Yarn A.