i agree there are better bluff candidates, it is one of those hands that could have gone horribly wrong and i would have had egg on my face. i discarded many of villians flushes once he only called the turn.
usually i do like to 3bet larger but due to partial laziness the Potbet button lured me and usually accomplishes the same thing.
Many flushes are still calling on the turn, specially the nut flush. Why villain would turn the nuts into a bluff having possible straight draws configurations set on the board?
As I said, it was a pretty good reading of hero to bluff in this situation but we cannot abuse neither overbluff, which can cost too much in the long run.
Personally, I would stop bluffing on the turn several times having only a gutter when it completes a flush. And this is the optimal play most of times, what changes the scenario is that you felt for some reason that villain would not sustain a three barrel and a push on the river, even if villain had second nut flush, for example, and it changes the whole picture of our gameplay.
What
@Station_Master had written is very valuable also, take it into consideration and continue having great insights, nonetheless controlling the impulse to abuse of them.