Well i agree with xareon that both conversations need to be two sided. One thing about girls is that the chances of them "drooling" over you is higher when you know ur timing. for example, don try to butt in on her talk whenever shes talking. let her finish her sentence and u listen well. well.. u don realli need to listen but at least to her it'll seems that your providing a listening ear to her.
Another thing is to be patient and witty. Make jokes. Have fun. Treat her as your best friend instead of some girl your chasing to be your gf. That'll ease the tensions up within yourself.
Lastly, be a gentleman. Its not good to lie but its not wrong to hide some bad details about yourself right? Keep those stuff to yourself till you're closer to her. If your outside, and you don't know what topics to talk about, LOOK around you. Make comments on anyting. Keep the silences away. Its a dread. Well.. thats what i can help you with. Hope it helps~
We all should look out for the finer things in life~