Pieced backing
I'm considering making a pieced backing for the first time and am just thinking it through. The front of the quilt is 9in blocks, mostly made from 2in squares, but with some 4-patch blocks in a pattern towards the centre of the quilt. So some rows have one or two 4-patch blocks, some have none. My idea for the back is to echo this design from the front, using pieced blocks in the same positions as the 4-patch blocks on the front, and a solid for the rest. My question is - some rows will be entirely made up of the solid fabric. Should I just use a strip of the fabric for the whole row, or should I cut it into 9in blocks and piece it, as I'll have to do for the rows that include the pieced blocks?
Hope this is clear! It's not as complicated as it sounds...
I'm also concerned about the absolute necessity with a pieced backing of getting the top and backing perfectly centered when I sandwich the quilt. That might be a challenge too, and I'd be grateful for any tips.