#1 is the best of the 3. #2 has a harsh crop and somehow I find the focus selection not speaking of the flower. #3 seems too static and boring.
I like #1 primarily due to the interaction of the petals and the softness that keeps up with a delicate flower portrait. To nit pick, I find the folds at the back a bit of a bother. Anyway, you should be happy with #1.
Flowers are very tough primarily because every one has had a go at it and your's is not much different from anything you can find on a decent gardening book. Well as I said, it is tough to interpret.