Cool idea you've employed here. The selective desat is nice, but I'm left wishing that it was a different color. As is, it is somewhat distracting because it is so bright. I think angling it different so that the background was darker might have been more effective.
This is a fun image, very creative perspective. Though for me the inner image is a bit noisy and I would have enjoyed much more clarity. However, after looking at this a second time I will bump the score for the creativity.