The color is the strength here. The lighting seems a bit over exposed in the top area and the focus on the petal seems a little soft. The green foliage makes an excellent background.
I like "Pane and Sorrow", "Jersey Shore" and especially "Down Came the Rain" much better. The colors are a little too brilliant (maybe because I have a slight headache) for my tastes. And just between the two of us, I never cared for peonies. The photo is cropped very well. If you change the peony to another flower and tone down the colors a bit, I'd like the photo even more.