Easy to knit once you get some practice with this lace pattern.
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Errata: Row 8: should read: K3 (YO, K1 from dropped YO2, all 7 strands except for 1st pattern repeat, which has 9 strands because of the CO, pass YO over this k stitch then slip to left needle and k again making a long loop, k, pass long loop over stitch, k2) 6 times
Helpful Hints for Knitting the Butterfly Scarf by Alice Tang
Cast-on with spaces between groups of stitches.
knitting all the dropped YOs as 1 stitch
Spreading the YOs before knitting as 1 stitch