You certainly have function and asthetics and the center channel mount looks flawless, love that white
Does your wide separation of the left and right speakers create a slight hole in the center or is the toe in sufficient to compensate? If you didnt have the center and tv there I would have swapped the sub and the right speaker position
Your rears look nice. I would have considered the audio gear on the wall with windows and the couch out in the room facing it and the fireplace
Enjoy