I am going to guess that you did the processing with some sort of filter then when in and lightened up some of the tombstones to draw attention to them. While it does have a spooky look to, the processing does nothing for me.
No the tombstones were already white, not much brightening, just contrast.
I really like the mood of the picture - somber, but with the faces of the markers highlighted, combined with a sense of import, significance - like the dead aware of the present and watching - almost wanting to speak.
I am going to guess that you did the processing with some sort of filter then when in and lightened up some of the tombstones to draw attention to them. While it does have a spooky look to, the processing does nothing for me.