...or on a serious note...
Just find ways to stand/sit close to her. Unsuspiciously though, dont make it obvious. Like if she / you speeks to the other when you are erm, sitting or whatever, you can lean in to hear her better [if whispering or hard to hear etc] then you already have some kino going on, but you can just add to it. If you're walking hom with her and she's cold, dont hesitate to say(or do)[and dont sound awkard about] putting your arm around her, be confident, but dont appear excited or keen. Make it appear natural. I've worked like this on a lot of chicks, works wonders.
Did it one time outside a club who I *apparently* fancied and we were talking, then we got all close and shit, cos of the cold[plus she was upset about her and her friend just having a slight fallout (my close girl mate was with the other mate)] So yeah, talking, she was cold, I carried on talking [this is important] whilst putting my arm around her and pulling her against me] Things were going great... until her bf's mates turned up
Important thing though, is to not make the whole 'putting your arm around her' a seperate thing, let it just be a part of the conversation/interaction between the both of you. Also, dont drape it loosely around her, its too casual, and maybe unconfident looking [depending] if shes cold, a loosely draped arm is gonna be of no use, so make sure you pull her close.
[sorry for sidetracking]
~Blend