1.Show interest, and show her that you would like to get to know her and you were happy to meet her or talk to her.
2.Always look into her eyes when speaking to her. That subtly will make her see that you are really taking an interest. Just be careful not to get lost in her eyes when she's talking, otherwise the only thing you'll have to respond with is "Wow, you've got pretty eyes." (see the first point).
3.Be sensitive and caring. Let her cry on your shoulder if she's sad. Make her smile when she's feeling crummy. However remember that she wants a man in her life so don't be supplicating.
4.Lead. She wants to be the wooed and not do the wooing so be the first to initiate touch (non-sexual and sexual). Be the one that comes in for the kiss. NEVER ask for ideas for what to do on the date, make plans and a back-up. If she knows of something better she will tell you.
5.Whisper in her ear. girls love this.
6.If you have little siblings, nieces, or nephews, show her that you really care for them. Play with them, watch over and protect them, show the girl that they look up to you.
7.For Valentine's Day (if you celebrate it) be sweet or thoughtful instead of showy and clichéd. A dozen red roses may be the traditional romantic gift, but most girls will be better pleased with a few of their favourite flowers tied with a red, pink, or white ribbon. Actually remembering a girl's favourites will endear you to her more than any elaborate scheme. If it's early in the relationship, though, and you don't know her favourites yet, a teddy bear (or other stuffed animal) is a perfectly fine fallback gift. Do something original to you.
8.Pick up lines are OK as long as they aren't obnoxious (meaning avoid the vast majority) or overtly sexual to someone you don't know.
9.Make her laugh. Girls love guys with a great sense of humour. That doesn't mean you should never take anything seriously, or else you'll come off as a clown.
10.Learn to dance and learn dance etiquette. Take some ballroom classes to build your confidence, so you learn to lead a girl through a song. Girls love guys that can dance.
11.Take the first step, if you're going to take her in your arms and sweep her off her feet on the first date, you're about as oblivious as a fish. Girls like the fact that they're being wooed so it doesn't help if you're that 'what's his face' at the corner thinking if you should make a move. Those dreamy eye to eye across the room crap belong in movies. If you're going to ever win the prize, you've got to tell the prize you want it.
12.Break the ice. This is one of most seemingly dicey things to do, but once you have done this, holding a conversation and laughing will be easy, and you will begin to share a good rapport. a good laugh is always a smart way to break the ice. for eg - you would show this webpage to her, and have a laugh over what is written and the whole idea of having such a page as well.
13.Learn to be spontaneous. Taking an improv acting class can help with ideas for breaking the ice, and can help you be confident with talking to new people. Ideas flow, and it becomes easier to enter into and disengage from conversation, and can help you be more comfortable with any situation.
14.Get close with the girl's family. Knowing that she has her family's approval makes her more comfortable, and knowing that you are a likable person is another plus.
[edit] Tips•Keep it cool, because even if a girl doesn't like you now, chances are that if you play your cards right you'll eventually spark an interest.
•Wear Axe or Tag body spray if you're in your teenage years, but be warned, it can also repulse her. Think before you decide to put it on.
•Don't stalk girls. They will start to avoid you. However, dropping cute text messages every now and then is okay.
•Remember, girls are totally unpredictable. Some will be sure to act like they DON'T like you at first, because they're afraid of giving you that idea and in turn giving you a big ego and/or making things awkward between you two. She will ONLY respond with genuine interest when she is sure you have an interest in her.
•Girls like guys who are sweet and sensitive. Be nice to all her friends and you'll then become more approachable.
•Don't confuse her and send mixed signals. Ex: one day you're teasing her, the next you're admiring her..she will get confused and flustered and may give up on you.
•Girls don't like nasty breath. Eat mints regularly and brush teeth often.
•Don't just act natural - be natural. If your girl has a brain, she'll be able to detect that you're trying too hard, or striving to be something you're not.
•Nothing is sexier than confidence. However, nothing is as unattractive as arrogance, or more annoying than a needy lack of self-esteem. Try with everything you have to find the drawing medium which is confidence.
•Play a sports team, and be friends with a lot of people. She won't feel so intimidated if she knows yo