Shy, and overweight.
Well, lose some weight, even if you only eat bread and water for a week. And be confident. Seriously, who gives a **** about rejection, no one will laugh at you for failing, life's for living. Talk to girls, get to know them, be cheeky.
If clubs are your sort of thing then dance with a **** and grind against her, if you get lucky with her it will be a major confidence boost and will help you with the next girl.
I'm not claiming to be a stud because I'm far from it, but seriously, if you don't ask you don't get.