Not that *I've* gotten to be any kind of expert on the subject, but In MY complete mediocre-photographic-talent opinion, there is a very delicate balance when trying to achieve these kind of macro floral shots.
I like this, but you've got a little too much in focus for it to work as the dreamy, ethereal look (and also a little too much of that very bold background color), but not nearly enough in focus for it to work as a macro focused on the pistil of the flower. IF I were doing it as the sharp macro version, I'd also want to get the center of the flower, showing the whole pistil...or looking straight on at the anthers (the fuzzy little tips).
From this angle, I just have an urge to scroll down and see the flower's center.
I love the colors though! I don't think it'll take you long to produce some really nice images with this, especially once you get that D90.