Where would you find free web patterns for pyrography?
I did an AM browser search for "free pyrography patterns" and got several sites with free patterns. I didn't go to any of them, so I don't know how good the patterns are, but I'm sure you can find some that are useful. I'd probably use google for a serious search, though. Google always has the best results (my opinion - not an "advertisement").
One great site to find patterns and directions for making Halloween costumes for kids is Family Fun. You can find them at http://familyfun.go.com/halloween/halloween-kids-costumes/. Another good resource is http://www.allcrafts.net/kidshalloweencostumes.htm. I also recommend that you check out http://sewing.lovetoknow.com/sewing-patterns/halloween-sewing-patterns for a list of places to find free patterns.
Visit http://knittingpatterncentral.com/directory/hats.php This is a long list of links to free knit hat patterns. Some of them may not be made on circular needles, but a lot of them are. You'll probably have to sift through several patterns before you find one you like. But that's the joy of finding patterns!