I've been to a couple of FMQ classes. Take a piece of paper and pencil and draw the pattern you want, ie the loops. Draw and draw. This puts the design into your brain, then practice on a small sandwich to make sure your machine is sewing correctly. I usually use scraps from the quilt I am working on. And as one has said, practice, practice, practice. I'm still learning and have good and bad days, believe me.