The pattern is knitted flat and sewn up at the end. No circular knitting required. The skill required is basic knit and purl.

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Tail
With A, cast on 16 sts.
Rows 1-5: starting with a p row, work in st st.
Row 6: (k1, k2tog) to end. 12 sts
Rows 7-11: starting with a p row, work in st st.
Row 12: (k2, k2tog) to end. 9 sts
Row 13: p
Row 14: k1, (k2tog) to end. 5 sts
Cut yarn, thread through rem sts, pull tight to fasten.