Or so I've been told...
I suppose you might like some professional advice.
Along with a few honors I received in High School in a public high school, the one infamous one I regret earning was my classmates' vote as "The Biggest Flirt". Both the girl and I who got it deserved it. We were accomplished flirts because we were stereotypical 'populars', above average looking and outgoing. We were also "the biggest flirts" because we could have been sexually active, but as Catholics raised in good families we chose not to be. We both would laugh and shrug off some tongue wagging because we knew between ourselves "where there is smoke there is not always fire" and everyone else should, like other things "beware of the shy, silent types" and the "guys who brag."
This said, I secretly pray that any children I may have have braces, acne, glasses and bad taste in clothes so they can escape High School unscathed.
The one top secret I will disclose for free is, flirting, like all communication, is 93% non-verbal. Anyone who tells you otherwise is a rank amateur. Not that it is actually a science and profession. Even as an 18 year old youth I called it the "Cardinal Debricasar eye" after Richard Chamberlain's character in Thorn Birds. And the eyes are always on the prize. Single-minded, whole-hearted attention usually trumps even the smoothest moves. The best flirts don't have to flirt; their biggest flirt is they always have much better things to do, like scoring game winning touchdowns. Flirting is unnecessary. In my favorite book, Jesus' gaze is so single-hearted, chaste and chased that He woos hearts instantly. National presidents might be the biggest 'flirts'. I think of a quote some might find cheesy, Mitt Romney employed from Friday Night Lights, during his presidential campaign, "Clear eyes. Full heart. Can't lose." Of course, this means one should maybe consult Obama's team...
Personally, because I am a recovering professional flirt, I am attracted to seriously awkward, painfully shy, and hopelessly inexperienced ladies who really aspire toward beauty, quality, class and grace. I think Tomboys and nerds who are are adorable and endearing. "Pippie Longstocking, Eliza Doolittle (My Fair Lady), Rachel Cook (She's All That). I feel practiced affectation, trifling with the emotions of others, raising false hopes, and other pretensses, even learning to flirt for its own sake, are all counter productive in the long-run, as some CMers have already hinted.