Measure your head, divide that number in half, then devide the half in half...say its 20 inches around....then the sides of your headband will be 5 "each side....main will be 10. Cast on 4 sts an knit, knit until you have the 'half/half' measurement....in this example, 5inches. Then increase 3 sts inbetween the exsisting sts. 7 total. Knit the half measurement....10 inches. Then dec 3 sts....knit the matching half/half measurement....ex: 5 more inches. Pick up one matching st on cast on edge and bind off, repeat for each st until all sts are bound off.