I found it to be a trial and error exercise. I had to resist putting a big pinch of stuffing instead of a smaller one. Stuff one then try to sew around it on the machine. That's when I learned I had stuffed some of mine too full. You should be able to put two blocks together and sew a 1/4" seam easily. If they're too full it's difficult to sew them together. If you get them too full it will be difficult to wash and very warm & heavy. The only time I can sleep under my biscuit quilt is when the electricity goes off and I have no heat.