I am at the penultimate stage of my granny square jerkin and my, at times, has the air been a bit on the blue side.
I thought I had worked out what size it needed to be and how many squares to crochet. They were all joined together and neatly edged around all outside edges. Then I tried it on again and disaster, it was all bulging and hanging outwards, especially under and around the armholes.
It was unpicked and one whole section of 3 squares under each armhole removed, stitched back up and is now a lot better: