Honest - Being 100% honest plays a big part in finding a dating match. If your not honest it could really mess things up for if it starts to get serious. I'm talking about stuff like if she asks you if you have ever cheated on a girl friend. If you say no and you really have, eventually she will find out.
Confidence - Make sure you show some confidence, even if your not a very confident person. I don't mean be full of yourself but girls hate it when their date isn't confident and sure of themselves.
Be Interested In Friends - No it doesn't mean get with her friends, it means be interested in her friends. Make friends with them her friends when dating woman. If you show no interest in her friends then that makes it look like you don't like any of them. Your girl will love that your taking an interest in her flow.
Talking About Yourself - Don't fill your girl with always talking about yourself. Try to be interested in them. They don't want to hear how amazing you are at every little thing. They don't really care. That will make them less interested more then anything.
Keep Them Guessing - You don't want to keep doing the same things. Girls like it when you surprise them and keep them on there toes. They will get bored if you are predictable and not fun.
Don't Be Aggressive - Don't be too aggressive. There is no need to be all over the girl every minute of everyday. Let them breath a little. No need to call them 29 times a day and NEED to see them.
Need Common Interests - Try to find a girl with some common interests as you. Of course she doesn't have to be the exact same as you but you always need stuff in common. If not it will make for a short dating stint.
Being Too Nice - Girls don't like guys that are always 100% nice to them all the time. Not that girls want guys to be mean, just don't always agree with her. Have a mind of your own.
Trying To Buy Her Love - Buying your girl anything and everything does nothing but make them realize your whipped. When they know that, they'll walk all over you.
Never All About Looks - Just because a girl is amazing in the looks department doesn't mean she is going to be a great girlfriend or a dating match. Don't base all your dating decisions on looks alone.
Don't Place On Pedestal - Don't psych yourself out before you even know the girl. Go into your first few dates with an open mind. Don't go in to it thinking this girl is so cool and hot, I can't beleive I am going out with her. Usually that will make you nervous and awkward. And she may be nothing like what you thought she would be.
Don't Do Whatever They Say - Again you need to have a mind of your own. Don't do whatever they say all the time. It won't be a dating match if you do everything they say.
Get Help - If your not sure about something, ask someone you trust. Too many times I've seen a guy pull something out or keep doing something that ended up ruining good dates.