The pattern is gorgeous, but it was challenging to get a fit I was happy with!

Cast on 78 sts for 6 repeats
Work chart 3x
Work first 3 sts of row one then turn to work heel flap across 33 sts
Switch to 2.25mm needles at beginning of heel turn
Work charts 3X, then work 16 rounds of rib in pattern
Work decrease row across instep to decrease from 45sts to 30sts
Decrease every alternate rounds to 12 sts then graft