I ended up making my cover too tall. The ends were supposed to meet at the top of the pillow, but mine overlapped by quite a bit. I decided to just pull the top over and put the buttons down a little lower. I actually like how it turned out, and maybe prefer to have them down a little instead of right on the top.
Another project I had was to cover a lamp shade for the lamp in our living room. You can see it on the table in this picture.