To my eye she is the glint of dawn sunshine off a dew drop on the first rose petal of Spring.
Trying to find the words to explain feelings is near impossible. All we can do is find comparisons, she is like this or that. Really she is nothing like anything else, moon, star, flower, ocean, bird.
If she has a poetic soul she will hear you, understand your fumbling attempts at romance, not make you feel foolish. If she doesn't have a poetic soul why are you bothering?