Well I could not put it off any longer, I had to darken the background! I really liked the way the top left hand side had swirled together, online it did not look too special but in real life it was sooo, pretty. I wanted to wait until I added all of the darks in on the petals to be sure.
Oh well, the whites were suffering with such a pale backdrop and the dark blueish-purple still looks really nice I think and make the whites appear so much crisper. I darkened the edge petals and added a few more details to the center of the flower as well.
I will need to let it sit again for a few days and stare at it to see if it needs any further tweaks :) Now to decide on a name...ugh!