I'm going to have to agree with rantora13 on this one. there is no way a guy can not be rejected by a girl so let me give you some tips from a girl.
1. try not to freek out when asking her on a date. if you need to say what your going to say to her to a stuffed animal.
2. If you REALLY can't talk to her ask one of your friends to do it for you but it is better to do it your self.
3. before even talking to her you should find out what she likes. If you say one too many things that she does not like then you are going to the dump.
4.just be your self. sooner or later you need to show the real you so just start off that way.
5. If she DOES reject you it's ok. there are more girls in the world.
Well that's not gonna be possible trust me when I say ur gonna get rejected guys always do at least once in their life. My best advise is to be yourself and that would help u more likeable with girls. U know let them come to u.