Thanks ever so much! I was confused by the fact that on the wall hanging I trimmed the batting to the same size as the block and I knew that wouldn't work with the wider sashing.
Just to be sure I have this in my head correctly. . . Starting at the upper left hand corner I attach the upper cornerstone and upper and left hand sashing to the upper left corner block, cut backing and batting enough bigger to accomodate lower and right hand sashing and cornerstone, do my quilting on that block, and proceed across top row adding each unit to the one next to itn then repeat with remaining rows.
Is it easier to do it in rows or stairstep fashion?