I decided to knit this flat to make the detailing and sewing easier. I started by knitting the body of the hat. For the ridges I knit those sections extra long and folded them in half and sewed them together. For the vertical lines that run between the ridges I crocheted over top of the black horizontal bands to give it some texture and depth. Then I made a pom-pom for the eye stock, tied that onto the hat, and knit (in the round on DPNs) and attached the lights on the top. I know Andrea’s son is going to love the hat. plus, I got a beautiful bunting in exchange to use for craft fairs.