I have decided to do scalloped quilting in the border and leave the edges straight. I collect many different things to help me with quilting ideas. This is a Dover book with ironwork designs. I found the perfect design. I made an enlargement of a design that I found in the book.
Perfect half circle.
Three scallops fit on each side. I will put something in each corner as I am not going to try to fudge a scallop and I can't fit a half circle in the corner anyway.