I usually hang up the finished top to check it over for obvious problems and will fix a turned block. But I try to catch problems with points or block construction as I make them...fixing them while relatively easy. Once it is quilted, it is done! I don't worry about the little things, most of the recipients never see the problem and I sure don't tell them....LOL! I want to enjoy making quilts, not fussing over tiny imperfections.