Ok. Do you see how the repeat of the rectangle backs of your chairs, all 8 of them, plus adding 3 mirrors all in a very similiar rectangle, is a bit too repetitive? Plus you have the large Tulip canvas which is another repeat. I think that is the issue here.

Please find consider this: A repeat of your lovely archway is in order. When you select your sideboard (which cannot be a deep one), try and have it have curved lines. I would remove the 3 mirrors and add a long horizontal rectangle mirror with a curved arched top.

Let me know if you need images of what I am suggesting.