Actually, some women like a man who is nervous or awkward. It's flattering. If I'm making a guy nervous, I know he's really into me or he's gotten to know me pretty well. 
Honestly, though, totally be yourself. It sure as hell beats trying to pretend you are someone you're not. If you like Legos, play with them. If you eat cereal with a fork, do it. In other words, don't cover up your quirks. The best people in my life love the worst in me. My best friend thinks it is hilarious that I do "The Randall." My mother calls me Sheldon, partly because my name is Shelly and that's what Sheldon's mom calls him, but partly because she does not care that I am a socially awkward nerd. Everyone in my family laughs because I talk in my sleep. All of these could be considered bad things. The best people disagree. It will prove true for you too.
Honestly, though, totally be yourself. It sure as hell beats trying to pretend you are someone you're not. If you like Legos, play with them. If you eat cereal with a fork, do it. In other words, don't cover up your quirks. The best people in my life love the worst in me. My best friend thinks it is hilarious that I do "The Randall." My mother calls me Sheldon, partly because my name is Shelly and that's what Sheldon's mom calls him, but partly because she does not care that I am a socially awkward nerd. Everyone in my family laughs because I talk in my sleep. All of these could be considered bad things. The best people disagree. It will prove true for you too.
