OMG!!!LOL!!! When I was a pure newbie, I was so excited, I sewed all of my bargello strips in one direction on the machine. WOW! BOW MENS WAVY, WAVY, and more WAVY! Think about it. Everytime you sew in a direction, it pulls a little bit on the material.....keep doing that and it exaggerates the pulling! Sew once in one direction, then in the other. It will keep the material flat. I had to take my bargello and lay it out, finding small, six inch squares, and then I put those together. It was a lesson well learned. The new six inch bargello squares came together in a kimono pattern and it was lovely but far, far, far too much work due to not understanding! I love that quilt because it improved my work! (Always get something positive from whatever you can.)