I get your idea, but your processing does not quite end up with the result of the upwards looking man standing out.
It doesn't have to be immediately obvious, but neither should it yield a result where viewers end up searching the whole photograph for your message, getting attracted by various people standing out because of their white garb (which could be corrected with good BnW processing), before realizing what you are driving at. In this case, one could say that the joke had been told for such a long time that it was no longer funny when you got what was happening.
My suggestion is to lose all that darkening on the right, it's just cheesey because light doesn't work that way, and it could make a little bit of sense, such as in your previous work such as "teeth", unless there was a solid cloud flying across the sun at that moment, it's obvious that said photographer had spent a lot of time just splashing black paint on the right. Do a proper BnW conversion, make sure your intended subject stands out. You did not do yourself any favours by leaving too many brightly garbed people in as highlights, the eye is naturally drawn to the brightest parts of the photograph when most of it is dark. Also, it would probably have been better if you had not thrown that big bush in the bottom left corner of the photograph as well. Cheers.