I've done one queen and used stitch in the ditch. There are differences of opinion on whether to start in the middle or on an edge. Having it pinned or spray basted really well is crucial, as is the pressing before you quilt. I rolled up on the side I wanted under the throat but it didn't stay rolled very well. I ended up just crumpling it! Having a table behind the machine and to the side for the rest of the quilt to rest upon is helpful.