I usually meander in a row at a time, If there isn't a definite roll then I get lost and usually end up on a slant. I don't think it matters when it is finished. Sounds like you are done, just be glad. I had problems with a baby quilt with the machine not sewing over thick seams but, I used thick batting, never had that problem before or after. I have machine quiltedabout 50-60 quilts, mostly double and queen sized.