Jan Krentz also has a great DVD on how she makes hers. I enjoyed watching it. Unfortunately, it is a friend's video ... but I know where to get it from if I need it in the future.
Basically you are correct. Spray starch or Best Press or whatever before cutting. And continually check your angles ... this is another biggie. The angles can go off after just one cut!
She had more hints too, but I can't remember them all right now.
ali