You're not alone, I have the same fear. I've got a quilt on the table, all pinned up, trying to figure out what to do. I want it to look nice, but I'm not very good yet at FMQ. I've done several quilts & found that 'doodling' my design on paper over & over helps (I use a big 2'x3' art pad), followed by practice pieces on the machine. But first you have to figure out what to doodle! lol!