Framing nothing which is still something, hence there is the subject "nothing" makes for a great idea.
Hmmm framing nothing.... it reminds me about a show that was on TV that was about nothing and it was the # show for many years in North America. Can you guess which one it was??? :)
think frame is the main subject here which was not what it was suposed to be in this challenge as I understood it. But the idea is fine and also the image.
Simple, yet bold. I like this very much. Some people I'm afraid may vote down because they don't see a subject being "framed", but like I said, I like it a lot. Good idea. Good job.