I've been meaning to do this for years. I decided to fly by the seat of my pants and give it a go. I have a lot to learn about sewing gussets, but the good thing is lots of sins are hidden by the window seat. There's a zipper in the back so I can remove it for an occasional washing. I chose to go without piping...maybe next time. I used inexpensive IKEA fabric since I didn't know if this project would be a success. Have to grit my teeth and tackle the second one....I hope it's better than the first!