Thanks to everyone who has answered, but I think I did a poor job describing the problem. I do not have wavy borders. I ripped a total of eight strips for two borders. So far, I've only starched and pressed six of them and two are curved at the end. Thats why I said two of six. I just haven't pressed the last two yet! The four that were perfectly straight have been sewn onto the quilt center and they're great, no wave, etc. So, I think I might like the technique, but for the two with the curve at the end and wondered if I could have done it in the tearing process. Should you tear just a little bit at a time? Or just start at one end an give it one big rip down the length? I just tore about six inches at a time. Hope this makes sense now!