lucyravenscar over at Etsy has crochet patterns available for 13 different characters:
Obi-Wan Kenobi (both young and old) [SWK: she’s a fan!] Princess Leia
Unfortunately, these patterns aren’t free but they look great and keep in mind that without the support of creators like this, there likely wouldn’t be these patterns at all.
Here’s an example set from Holly’s Hand Knits blog.
Another example set by lostsentiments