So I've mustered up the courage. Now how to use it?

So I reaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa… like this girl. ( If you look at a few of my other questions mentioning a girl, it's all about her.) And now I want to ask her out. How should I say it.. like "Do you wanna go out with me." or.. like idk. Just how do I put it, so that its not corny and it's clear. and if she says yes or no what do I say so theres not that akward "Soooo." Like I don't want her to finally be my gf and then we just feel weird and stuff.