If she looks up, smiles, responds, and holds eye contact, you're off to a good start. If she ignores you, move on. It's that simple. Pull the invisible dagger out of your chest and limp back to your barstool. Not all women need you and you just have to learn that.
Nothing is more awkward than a first conversation.
There are many topics to steer clear from and even more that are just too freakin' boring to try and maintain. Remember, you are confident and pleasant smelling. If you can talk with ease about a movie you've both seen you are in good shape. Here are some topics to steer clear of. This is a big one.