I'll usually start as early as an oppurtunity arises. For example, if you are meeting someone with a handshake, hold her hand for as long as humanly possible. I mean past the point of what you think is socially acceptable. Don't just stare though, say something to her as you hold her hand (what you say, I'll leave to your imagination).
The back is my safe haven. It is my battleground. If a girl leans in to speak to me, my hand will be on the part of her back that will make her feel guilty about being so excited over a stranger's innocent gesture.
You don't have to worry about looking innocent (actually this is a bad frame of mind), so long as you time your kino correctly. How do you know when the timing is right, and what would you do then? Have you tried mirroring yet? Shadow85 pointed you the right way...Learn how to mirror, and when you have the girl following your body language, continuosly bump the stakes up (congruent attractive progression is key)...she reaches over and touches your arm...touch hers for a little longer.
Sometimes, I'll just joke on a girl until she hits me. (If she literally hits you, this is not an indicator of interest). After that...well it's on.
Already comfortable with her? Play with her hair and slowly begin to massage her scalp, rub her neck, etc...and when she can hardly keep her eyes open any longer...well, I'll let you decide that next move
But yeah man, I feel where you're coming from. I love kino (probably because it used to be so unnatural for me), and I'm always looking for new and improved ways to deliver the most efficient forms of it...to build the maximum amount of rapport, comfort, and get her wet as a faucet...right now I'm experimenting with the most socially acceptable ways to touch a girl in a way that will make her orgasm, or at least want to...I'll let you know how that goes.
Well, let me know where your curiousities lead you...