Errata noted by knitter: Part of the pattern is missing.
the front and left panel should be sewn to the back before the edge is to be knitted.

From the Knit Rowan website:
Knit this women’s stocking stitch cape from Alpaca Colour, a design by Lisa Richardson using the exquisite yarn Alpaca Colour (baby alpaca). With garter stitch edgings and a beautifully cosy turn back collar, this knitting pattern is for the beginner knitter.

Finished outer left arm to outer right arm width dimensions:
52.5: 58: 63.5: 70: 77.5 cm
20.5: 23: 25: 27.5: 30.5 inches

Yarn Information:
Photographed in Amethyst 141
6, 7, 7, 8, 9 skeins
786, 917, 917, 1048, 1179 yards