Hi, I would appreciate advice on making a roman shade for my new french doors. I have a book of simple sewing projects, but I am confused on the directions to attach the liner to the curtain fabric. On the HGTV site, it showed basically making a big pillow case by sewing the right sides of the fabric together and then turning them out. Then all you have to do is attach the plastic loops, sting it up and attach to the mounting board. Has anyone every done it this way?