This pattern is knit flat and seamed together in the front with a twist. Due to the nature of the stitch, your headband will curl. Blocking will be necessary when you are finished knitting. This will help relax the curl quite a bit, but not completely. I personally like the curl, as the headband tucks under my ears nicely and keeps them snug and warm. This pattern can easily be adjusted to be different sizes by lengthening or shortening each color section. You can also adjust the width of this headband by casting on more or fewer stiches.