It all depends on what you're after. If you clearly state what you want, you're more apt to get the responses you crave. Keeping in mind, that it takes all kinds to make the world go round, you may receive some 'not so nice responses.' People's true colors come out when they can hide behind a computer. Bullies come in all ages, and with all different kinds of craft preferences.
Sometimes a mistake is found after the project is already completed. Out of sight, means out of mind! There are some quilts that I can't wait to present to the owner, just so I don't have to look at them anymore. Harder to make the quilts that are outside of my normal comfort zone. All of my quilts are gifts. If I did see a mistake, I normally fix them. I usually go by measure twice, cut once theory. I lay things out on the floor a lot, take a picture and refer to that A LOT!