After casting off, you stitch the two short ends of the strip together. Pick up stitches (I used circular needles) along one long side of the swirly strip so that you can knit the ribbed brim.
Then, with needle and yarn, gather up the other side to close the top of the cap.
I made a wispy pom-pom for the top to finish it off.
I'm pleased with the finished cap. I'll send it off to a sweet baby girl this week.
I also made this cap a few weeks ago. I noticed that the baby boy I knitted it for has a few other newborn knitted hats already. I hope I've made this one big enough for him to wear next winter.
Enjoy your day,