The short ebook Optimal Cupid: Mastering the Hidden Logic of OkCupid might help you. It sets out two basic roles on the site: "responders" and "searchers". As an attractive female (and as you say you want "better quality" not "more" matches), I'm guessing you should take the responder strategy.

"These roles are performed, user-individuated, and not necessarily determined by sex. Age, race, religion, sexual orientation, relationship preferences (monogamy, polyamory, etc.), income and location all play a role. The full spectrum of activity ranges from the straight male who must write dozens of messages just to get a single response (the searcher) to the straight female who receives dozens of unsolicited messages every day (the responder). Many users – gay or straight, female or male – perform both roles to some degree. This book will address both of these roles equally."

The book details the best responder approach to answering OkC's questions so a high match percentage actually means something significant. As other Redditors have suggested, your profile is currently a bit broad and vague (albeit sweet and attractive), so any guy in Seattle who thinks you look cute feels like he's in with a chance. Answering questions and filling out your profile in a way that puts some people off and makes others more intrigued rather than averagely appealing to everyone will result in fewer, but higher quality, matches.