I'm sewing light and dark rectangles together and pressing toward the dark.
My plan is to construct "blocks" in this manner and then sew those blocks together in the same way until the quilt top is done. The seams should all nest together as long as I stick to this plan. I prefer putting tops together like this rather than sewing long rows of blocks together because the shorter seams are easier to manage and keep accurate. Eventually, I'll have some long seams. There's no way around it. But I'd rather have a few per top than one every row.