I am so pleased with the way the pillow turned out. Two wonderful ladies made great suggestions on what to do with the quilt and I had two other wonderful friends who gave in person advice.
I added a flange as suggested by Linda.
I used a textured type fabric as suggested by Doris. I wanted something that was more furnishing like and ended up with micro-suede. I did research on how to sew it and it ended up being a breeze. No different than cotton. No special needle either.
I mitered my corners and using the micro-suede was very helpful. It was very forgiving and being a pillow it doesn't have to be ironed. It took some figuring out though on how to negotiate the 45 degree angle and get the corners sewn together. I even did a flap back. So pleased with myself. I see more pillows in my future.
It has turned out super well, but as I type this and look at it at it I don't like how the corners seem baggy. I made it exactly to the pillow size (18x18), but it just seems kind of limp. Any suggestions? I think I am going to sew in another quarter inch on each side to bring it down to 17.5 inches.