My tipp: don't try to analyze and think to much about yourself. It's like thinking about the way you walk and suddenly walking feels strange and forced. You can't change who you are, don't even try it.
Instead try to focus on her, everyone loves a good, active listener. You are there to get to know her anyway, aren't you?
One thing you should take to your heart. Finding a good match isn't an easy task, don't go on a date expecting her to be the one. Eventually you will get disappointed or rejected, that is totally normal and nothing to worry about. It just means you and her weren't a good fit.
And don't try to act in a way thats untypical for you just to impress her. You want her to get to know the real you, not the impression of someone you think she would like.
Think about it like a casual date without any expectations is the best you can do