Well, I guess I kind of sort of finished my sunflower. I decided on this one quote I found by Lemony Snicket which I felt described the picture. Personally though, I'm not too satisfied with the way it looks.
Edit* This is the new look after suggestions from Mrs.Ottum. I changed the background colors to match those of the sunflower head, and I added the author of the quote at the base of the stem.