I made a couple of tweaks to the pattern as I wanted something that was more scarf than shawl; long and thin. Firstly I went for 32 repeats of the main pattern block, rather than 26. I wish I'd been braver and gone even further with that as I still had yarn left at the end, though I'm not sure an extra couple would have made much difference.
Then during the short rows section I knit four stitches beyond the gap on each pass so that I consumed the stitches more quickly to create a thinner crescent.