I was at my quilt guild meeting this past week and a lady had done one. She said you need to starch it every few rows and iron it so it stays flat otherwise they tend to wave at you. it turned out pretty but she said she had to rip it out several times to get it to stay flat. They don't tell you that in the instructions she said. Look on you tube and see what they tell you on there. That is where she found the info on the starching. FYI