Lovely ladies, when you're out at night and open to a cool guy approaching you, how would you suggest he do it?

There are plenty of guys who genuinely want to have a good interaction with a pretty girl, but he just doesn't know how to do it sometimes. For me personally, I have no problem in the daytime, but at night, I feel that many girls have their defenses up. I asked about this a while ago, and the large majority of girls said it's either because at night, things get get dangerous or because guys are just looking for sex. I'm sure there are those instances where the guys are just not good looking enough, but let's say he makes the cut.

Guys, feel free to add your suggestions as well.
Lovely ladies, when you're out at night and open to a cool guy approaching you, how would you suggest he do it?
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