I made a Bargello and it was completely finished and on the bed. I had turned one color around, it was a 2x2 square, bright yellow. I could not live with it. Went to the quilt store to get a piece of the bright yellow. Oh yeah, this was a year later. The store had one fat quarter left of all the colors I had used and yes it was the right color. I took that little square out and hand sewed the new one in. Can't even tell where it was now. And all the other things you have done, I've done most of them.