What has made me confident with women is having had some success with women... How can I say it: make sure she has fun.
Being yourself is the best way to meet women, because women, like every other person, want to meet an original and interesting person - and the only version of you who that actually is, is the person you are without trying.
Lastly: if your focus is simply on sleeping with women, or on sleeping with a type of woman, you're already lost. If you were a beautiful woman, would you like to be a notch on some schmoe's belt? Being a woman is not a synonym for being stupid. Beautiful women see guys that want to sleep with them all the time. What's so good about you?
If you go out and introduce yourself to a lot of people with the intention of maybe making friends, or getting to know people, you will be much better off. Better that than pretending to be a jerk.
It's much better to be yourself, and simply have standards that prevent you from considering anyone who is not beautiful to you. If you dress nicely, have a decent job, a car, a nice personality, and are good in bed, they'll come looking for you.
Believe that you have what it takes to make someone happy!