I want to do an all over fmq doing scallops or clam shells as they are sometimes referred to. I am having quite a time of trying to keep my curves lovely and sweeping. I have tried free hand-ing them and I have tried following a drawn line, I have tried stitching the rows vertically, I have tried stitching them horizontally but all have been a rather resounding fail. Has anyone any tips for doing these? My mountain of practice sandwiches is becoming alarmingly high!