[Nat]

Flirting in non-GLBT space is definitely a different ballgame than in glbt space. I don't know if what I do is actually flirtation, but I definitely convey my appreciation in what I hope is a harmless way. I don't think I knew how to flirt with butches when I first came out - but over time it's become second-nature to give that look of acknowledgement/appreciation/knowing that tends to cause a corresponding blush or shy smile or stammer enough times for me to know that the message is conveyed. And occasionally a free coffee.

My intention is more of an "I see you" in an appreciative way than anything more aggressive - because I don't want to unintentionally communicate availability.

When I was single and found somebody attractive, it usually worked pretty well to be friendly and direct. A casual compliment works well if the person is available and interested. Many people will open up if you ask a few questions that aren't too invasive but require an opinion or history of some sort. I think the secret to successful flirting is not to be too invested in the results.