I am restoring an old photo where the background is mottled and uneven (partly the result of my attempt to cover up a torn section of the background). How do I blend the background together so it looks even and does not mottled? I'm not sure what tool and what settings to use. The area in question is to the right of the subject's head. I think this is a question about how to blend an uneven background, but I am unsure how to do it. I have created separate pixel layer to smooth out the background, but what's my next step (or steps)? I think it's pretty basic, but I am new to Affinity Photo.
area in question is the background to the right of the subject's head.