Or more specifically, would it look shit?
The walls are adjacent. On one wall there are two doors at either end and a sofa in the middle. The other wall just has a table and chairs in the middle. I have already got a 'gallery wall' above the sofa but I have so many other pieces of art and knick knacks I love and want to display, I am contemplating another one above the table, to fill roughly the same amount of space on the wall as the already-existing one does, so that there is a bit of mirroring going on.
If you are not a Pinterest addict like me, it's something a bit like this: ourhumbleabodeblog.files.wordpress.com/2011/03/bird-gallery-wall-and-bench.jpg