First, your sig is too long.
Now, as for your question.... Don't think about what you're gonna say. I noticed that when I don't think and just say whatever springs, girls are much more interested, 'cause they see I'm spontaneous and I speak my mind. Also, look them in the eye, and make sure your body language is open. (Uncross everything you have cossed, look them in the eye, smile, lean forward/towards them a bit, possibly show them your palms)
Also, speak about things you really like. Girls can see when you're passionate about what you're talking about, and, in my experience, they like it. Obviously don't talk about monster trucks or the shotgun formation, but stuff she can relate to that you like.
Try to make her laugh, without telling jokes. Be like, uh, Jim Carey, Chris Rock and the like when they do standups. Don't be dumb, just a bit silly once in a while.
I can't think of anything else... Someone else will probably add something.