Stuart, the light on the wings captured my attention right away, so I think it works here. Well captured. I like the angle of view, just wished the bg was less busy.
Lovely backlight through the wings, posture great too. Perhaps a little more space on the right of the image? I would clone out the distracting light area in the top corner, as well as the two vertical lines in the background. Having done that add a bit of blur to the background and I think you will have a striking image!