Knitting / Advanced
Feather and Fan
A lace of decreases and yarn overs on every fourth row that pulls the fabric into scallops, also called Old Shale.
An illustration of the texture, showing 4" of fabric at your gauge. It isn't a photo of real yarn.
Swatch first. These numbers are only right at your gauge, and the starting values above are typical figures rather than yours. Work a 4" swatch, measure it, and enter what you get.