forgot where i read this one trick. look at her and when your eyes meet hers, look down at your watch like your in a hurry. count to 3 and then look back up. people tend to mirror other people and if you catch her looking at her watch after the 3 seconds, thats a good sign.
general stuff =
bad- arms crossed, legs crossed(no sex for you), leaning away from you. just about any type of closed body language
good- open body language, wrist is exposed, if the legs are crossed but pointing in your direction, open arms, playing with her hair or anything shes wearing, fixing her hair and other stuff(shes making her self look better for you) pupils dialated, licking her lips(not you licking her lips =P), leaning towards you, shoulders pointed in your direction
theres a book out by allan pease or something i believe. its a PDF so you should be able to find it online(it WONT be avalible on ***** or limewire, so dont check there please!:woo: `.` *rolls eyes*)
people tend to touch the area around their mouth when they lie. when we were kids and we lied, we subconsciously covered out mouth after the lie. as you get older, its less obvious. adults are more discret with this, when they lie, they will bring their hand up, but instead of covering their mouth, they just rub it against their nose.