Despite interesting and artistic composition, this suffers from excessive darkness in comparison to entries with white background. For this challenge, brighter exposure would have helped a lot.
Please forgive me, please! The challenge is "A WHITE Background". You have opted for shades of gray. The BEST of the best and I can not give it a 10! Sure a 10 in any other challenge, but not where there is a very clear, specific and direct instruction. It breaks my heart. Using my discretion I rated all the images with mixed/colored/dark whatever backgrounds a lowish score. Yours I just can not. But I also can not give it the 10 it so richly deserves.