took a while to spot it, so temptation is leave it. But I've done this myself and realised that although people probably won't spot the misplacement, it bugs me, so I redo it.
with it being in the middle , you plannd it right....
I always do a fab upside down on purpose, It is not that easy to see, I wouldn't change a thing. It looks great.
she will never see it. It took me about two min. going row to row, verticle then horizontal till I found the reversed block.
I vote to keep as it is and move on.
Teresa
Like my Daughter tells me - "you won't be able to see it from here". I would send it on, I couldn't find it. If it bothers you change it, if not finish it up.