I just had to try this, Al's was so beautiful. I haven't a clue what I am doing but it is fun having something to photograph without having to drive an hour and a half.
Looks good to me! There are a couple of whitish areas on the top left corner...you might want to tone those down or clone them out...otherwise, I think you've got it.
Something else that's fun is to play with the liquify filter in CS3. Pushing and pulling those flowers can be a blast!