It's so simple, isn't it? You see a woman, you smile. There's a little more to it; it is not that easy, or else you would be hooking up a lot more often. But smiling is a perfect way to show that you're interested, and it will also let her know that you are a nice, fun guy.
2. Become a greeter
Amazingly enough, the best icebreaker, the best pickup line and the best way to approach a woman is to walk up to her, smile and say hi. Practice by seeing how many times in one day you can say hi to women - even if you aren't really interested in them. It will allow you to become used to the action. If you are not close enough to intimately say hi, smile and wave.
3. Hand out personalized business cards
Have some business cards made up with clever lines on them. You can even buy the pre-perforated blank cards at the office supply stores. Print some with your e-mail address and phone number listed on them and add something creative to them. It'll beat giving her your actual business card and providing her with your work info.
4. Bond with her
If the object of your flirtation is someone you encounter often, make an ongoing joke with her about something. For instance, if she works in your grocery store, you could call her the Goddess of Grocery. The next time you see her, you could work in a line about how much she must hate grocery shopping for herself. Inevitably, she will ask you if you found everything all right. The possibilities are endless. It's goofy, but it will more than likely make her laugh. And you might be able to ask her out after she warms up to you.
5. Be prepared for rejection
Here's where flirting turns sour: When she disses you. We all get turned down, even really slick guys (although they'd never admit it). Think of it as a numbers game. The more women you encounter, the more of a chance that you will get turned down - and the better your chances of getting a date.