You did an excellent job.

Sometimes when I need to clone a larger than normal area I'll make a copy of a "clean" region near the "contaminated" spot, move it over and glue it on. Sometimes I'll alter the orientation of the copied part or alter the transparent or opacity property. The often leaves slight edges, but they're easy to take care of with the Clone tool.

The reason I do this is that, at least for me, sometimes the clone tool ends up reducing the texture of the background, and a copy/paste helps to bring in some of the underlying texture from a nearby region.

Sometimes this just won't work, or it doesn't matter, or I have been able to get away with fewer dabs of the clone tool which will move around but not smear the texture.

I don't see this as a problem in your image, it just brought the copy/paste/clone edges method to mind for me.