One of my favorite and easiest things to think of is, puzzle pieces. You know the locking pieces, just glide from curve into curve. Another hint that a friend told me that makes it so much easier is to quilt to the side or backwards whenever possible. When we sew, the sewn piece goes to the back of the machine. When you free motion, if you place the quilted part to the side with the unquilted part to the machine, you can see where to go next. But my favorite is when you have the quilted part toward you so you can see how far to swoop.