UPDATE:

I took my friend's advice and added a translucency map. I also added a tiny bit of transparency and plugged that into the translucency map as well. I changed the main map and changed the fastscatter attenuation to Light and got rid of a couple nodes that were no longer necessary. I think they look better...not nearly as velvety, but still slightly and I got a little bit of fade out on the edges. They have depth. You can also see petal detail now (yay!).

Same lights as before.

LaurieA