A variation of William’s Chemo Hat found free on the Knots of Love site at this link. I knit the cuff per the pattern, and for the body of the hat I just knit rows 1 and 2 until it reached 6 inches and then did the decreases per the pattern. It makes a small hat when knit according to the pattern which is probably fine for a Chemo hat or child but otherwise you’ll probably want to knit for a least 7 inches before decreasing.