Like ipod said, be yourself :)
Also, dont be discouraged if she says no. (Im hoping for you that she says yes, but you never know :L) But of course, good luck :D
I dont mean to be a creeper, but how old are you? Age, not very surprisingly, has a big effect on this.
'she so beautiful, one of a kind. she has gorgeous brown hair that shines a lovely gold in the sun light.' Aw! Ok, first things first, it sounds like you REALLY like her :D Second, when you guys go out (yup optimisim helps) tell her she's beautiful. tell her that shes one of a kind. :)
I wouldnt call myself an expert, but if you h ave any Q's, give me a call :)