If I'm reading the directions correctly, they're saying to lay out each row of triangles (maybe pin them in place) and make one circular seam per row catching part of each triangle. They look like overlapping prairie points to me. The seams do look thick because of layering the triangles but you're cutting off the excess material before the next row. I did also read that this quilt is very heavy. Now, I've not tried this, only giving you my opinion of what I think it's telling you to do...so if someone else knows what to do maybe they will let us know.