I think there is always, always, always SOMETHING positive to say. Whether it's excellent choice of colors, unique choice of colors, interesting choice of colors, you worked very hard, what a perfect size for snuggling - whatever - you can say something positive. But when someone asks about their techinical abilities and they are not so good - that's a bit harder. I always try to say find some area where their points DID match or the quilting IS good, and focus on that. I think when people look at your work and don't say anything, so as not to say anything NOT nice, it's disheartening, too.