I made a massive mistake when we were building our first wall. I measured from the wrong place on our Sketchup model and made the wall a total of 8" too small. Luckily, I padded each board enough that only some of the boards are too short, and they are only off by a small amount. Still, we needed to make up the difference so we've put these patches on. Once everything is cut down to size and the bow goes over it, I don't think it will be super noticeable. Still. Measure twice and cut once, people!