When sewing your strips together do you open your seams or fold them over, one one way and one the other? This is my first one and I don't want to mess it up. I read somewhere that you shouldn't wash your flannel before making the quilt (if using flannel) but I'd already washed mine but I think I know why she said that. I think it might be because it makes it stretch when sewing it. I know mine did. Thanks for your help.