Ghost ? Of past worshippers ? That was a looong exposure...
I would rather see it more vertical, to include the top of the altar. Looks like interesting baroque piece.
It will be nice ! If you don't mind: one picture in colour ? And what is it and where is it...Indeed, and there are also some very nice frescos on the ceiling of the nave. When I have time enough, I will make a closer study of this church.
Actually, if it were me ... I would lose the whole ghost idea and go all-in on capturing that ALTAR. That thing is exquisite. Put that thing in pin-sharp focus, with all the plaques and candles etc., and do the same conversion here ... I want to see that.