The pattern is provided for those who want to follow it exactly. There is also guidance for customisation options.

The original blanket is knitted in 4py, at a gauge of 27 stitches and 41 rows to 10cm (4 inches). This gives a blanket that measures 55cm x 68cm (24 inches x 27 inches, approximately).

You can knit a larger size by either increasing the number of motifs or by knitting in a thicker yarn and using larger needles.