I'm going to assume that you want to win her favorable attention. Think about it, when you sit down at a restaurant, you have the waitress's attention, but you're still not any different than every other guy in the place. They ALL have her attention in that way.

However, when a girl sees you, and walks over and gives you a hug and kiss... then it feels a whole lot better doesn't it?

So let's focus on how to win a girl's favorable attention.

Principal #1 - Get her to notice you in a favorable way.
In order for you to stand out from the crowd, you have to be different than the crowd. Now, you could dress up in a black rubber suit, and wear a cape... and you would definitely make you different.

However, that kind of stunt would get you the wrong kind of attention from her... and probably everyone as well.
One of the easiest ways to do this without even saying a word is with your appearance. You could, for example, have a unique haircut... not the same one that every other guy in town has.

You could put more thought into your outfit, and wear stylish, yet unique clothing. And you can add even more flavor to your look by trying on unique accessories (different belts that really stand out, unique ties and tie clips, strange and unusual necklace charms, etc).

Just make sure your outfit doesn't scream out, "Hey everyone, look at me!". Nobody likes that, and it would make you appear insecure.
Another way to cause her to notice you is simply by improving your posture, and your energy. This may sound a little new age, but women really can sense a person's energy much better than men.

If you carry yourself like a confident, attractive person who is fun to be around... everyone around you will notice it... just by being in the same room as you.
People can literally feel it when they are around someone who has a warm, inviting energy.