Well, I cheated a little (Magic…)

I used the plastic wrap filter with CS5 and then removed a lot of it with a mask layer. So the (sorry I don't know how you call the things sticking out of the flower in english) things are shiny and it gives them an almost translucent look.
If you want to try it, before you use a filter, just make a copy layer of your basic layer, apply the filter, then add a mask to that layer and you can just paint out the effect of the filter on parts you want to remove.
Enjoy.