Perfectionists want you to know it but the thing is, nobody cares. People look at a quilt and say "how beautiful" or "I don't care for the colors" (a valid comment) or "what a lot of work"; hardly anybody ever says "she's missed some stitches" or "her corners are off" unless it's another quilter, and even then it's more just a statement then it is a putdown. The main thing is to enjoy what you're doing and someone flying over on a plane won't notice if it isn't "perfect".