Hi, I partially pieced one of the future blocks awhile ago..I pp'd the strips then trimmed the sides to the seam allowance with the exception of the outside seam allowance. then...I removed all the paper except the outside pieces then sewed the strips together. I was able to nest the seams that were critical to them laying flat..it worked like a dream..Of course the machine & presser foot was set to sew @ 1/4"...This was a block that had lots of little squares..
I don't remember which one it was...I'll be doing the rest of the little pieces trips that way.