I see the smile, and I think B&W tones work ok here. But I feel like there's too much foreground in this shot...the interest (to me) is in the upper portion of this shot.
Interesting...I'm not following the title to any particular element in the shot, but it's your image so I guess you titled it what you thought would work best. ;) Personally, I feel there is way too much foreground to keep a viewer interested in the shot for very long...having to seek out the tiny elements in just the top third of the image is difficult at best. Nice black and white conversion, however. Good luck in the challenge. :)