Unconventional. You seem open-minded or unorthodox, and you set your own style. When flirting, you may act a little "out of character" or "off the wall" or even "outrageous". Flirting may involve demonstrating how you can "dare to be different" from others and not conform to peer pressure or social conventions; such as acting a little crazy sometimes, or wearing unusual clothing. You might act "rebellious" or get talking about "rebelling" against something with a co-conspirator you are interested in - or about "reforming" things with their help.
Individualistic. You set your own rules in how you relate to people, and respect that someone else has his or her own way of relating too. You might encourage the one you desire to "just be yourself" and show that you appreciate the ways they express their individuality.
Free-spirited. You need your own "space" and you seem willing to let someone have theirs. In fact, the more you want them, the more you may act like they are free to leave. You may find yourself flaunting the "rules" of decorum in an attempt to get attention from one you would flirt with. You may act like a "free spirit" and encourage someone who interests you to "just do your own thing"; or show you appreciate what they are already doing that is out of the ordinary.
Visionary. You seem like a "visionary" who sees future trends, and may invite someone you desire to join you in working at changing the world somehow. Talking about your vision may be a way of flirting with the object of your affections.
Coolly detached. You may appear aloof or unemotional, or perhaps intellectual. It seems an odd way to "flirt", but it can be attractive to those who are curious, or who are not comfortable with overly-emotional people, or who want you to show your feelings more. Someone always wants to melt the "Ice Princess" or get "Cool Hand Luke" to show his feelings; so your "detached" air could be intriguing to someone you are interested in. If your basic nature is NOT to be cool and detached, but passionate (Sun in Aries or Sagittarius) or emotional (Sun in Pisces)... you may paradoxically act less warm and more cool when in the presence of a person whose affections you would entice.