I think finding your pattern would depend on your skill level. Can you visualize a Mariners Compass, or a Bargello? I wouldn't want to suggest anything like that to someone with little or no experience. How are you at fussy-cuttting, stack-in-whacks or medallions?
I would need more information to give you an honest opinion. I'm sure there are people on this site that could give you better advice. (Sometimes my best creative juices flow, just as I'm falling to sleep at night.) :-)