hats off to knitting

I've been knitting hats. The pattern is straightforward - cast on 64, 72, 80, 88 and then knit in the round between 5-7 inches, then decrease starting with k6, k2tog over 12 rounds until you are finished! I mixed it up with eyelets and played with different yarns and eventually made one that was baby sized, but I don't have it perfected quite yet, since the sizes are turning out in a wide range. Yarn types are in the file names.