A gorgeous, yet often overlooked bird. Nice image design - clean and simple.
Light seems harsh and some artifacts around the perch visible. I would ease up on the sharpening a bit.
Love the look back pose.
Great DOF, and I like the look back pose. You certainly chose a pleasant BG to compliment the Dove. Comp wise, I would bring in at least half from the left. I agree, the sharpening looks a bit on the heavy side. There is a strong halo visible in most areas. Before completing your sharpening process, you can see the before and after, thus seeing if you need less or more.