When I get ready to cut my fabric, I iron it and fold it once. I iron the fold flat but when I lay it on my cutting mat you can see a slight bow in the middle of the fold. Why would this happen if it's only folded once? I know you can get the bows if the fabric is folded more then once. I have tried ironing with starch and without but it still happens either way. How can I stop this?
Thanks