Subject, pose, BG, perch all excellent. I am curious about the under exposure of 2/3 stop. Was this necessary to hold back blowing out any highlights? I would think your histogram would show still having ample room for more exposure to the right.
Excuse me for answering Rons question for him Make, but I reckon you could blow that iridescent blues out pretty easily. I often do with reds and yellows.