It's a lot easier if you have a flat surface to work on. Here are links to Youtube videos that show how to create a styrofoam surround for your sewing machine. My dh made one for me, and it works great!
http://www.youtube.com/watch?v=g14go...ure=plpp_video
http://www.youtube.com/watch?v=yAS25...ure=plpp_video