I started work on what I'm referring to as my stained glass quilt. I've already messed up.
The sashing for the individual blocks is 1/2" smaller than the sashing for putting the blocks together. Something I didn't figure out until I'd made up the 9x9 block, after having already completed 8 blocks with 4 seams each. That'd be 32 seams to rip out since I don't have enough fabric to start over. Or doing a lot of math in order to make the center blocks work out. Hmmm, decisions, decisions. I decide to put it away for now and finish something else I've started.