My worst mistake was making a Storm at Sea quilt using percale sheets (!), high loft batting (!!) and THEN deciding that I should echo quilt the thing by hand (!!!) It was for my elder daughter's 5th birthday and needless to say, she did not get it. It languished as a UFO for years until I decided to ram it through my machine just to get the darned thing finished and then I took it to football games when my younger daughter was a high school cheerleader. That sucker was indestructible!