I made a small strip quilt - I started with the backing the size I wanted the finished quilt to be. Put a piece of backing on top of it. First two strips I put right sides together and sewed them to the batting down the right side. Then I flipped the top one over and laid another strip right sides together and stitched. Repeated til done. I could have done some FMQ on the strips before I sewed the next strip on, or sewed the next strip on and FMQ the previous one but for that purpose it wasn't necessary. Don't know how I would approach sashing. Maybe the same way by laying it face down on the previous strip and stitching and flipping. Let us k ow what you decide and how it turns out.