I do some FMQ on some of my quilts and I have done straight lines also. It just depends on the quilt and the way I want it to look. If you don't like the way your design turns out when you do FMQ, I know some lady who draws her design on her quilt then FMQ quilts it. But to me that is not FMQ. I use to like to hand quit my quilts but because of my multiple sclerosis I machine quilt now. Just do what makes you happy and enjoy.