If someone shows me a project is mainly someone I know and is expecting my comments. I always say something encouraging. I taught a few of my ex coworkers to sew and when we did show and tell it was all ohhs and ahhs, but when we were at the sewing room I always found a way to teach them. The lady that taught me never criticized my work and the next time we were together she made sure I learned to correct what I did wrong. If I am at a craft show and see bad craftmanship I just keep going. If they are selling it they are proud of what they did and as long as someone is willing to pay for it, who am I to differ?