I was just wondering if people that do long-arm quilting get any "nightmare" items to work on?

In a perfect world, what do you hope to find/see when something is brought in to be quilted?

I've seen a couple of posts where the person was disappointed with what the long-armer did, but I would like to see some views form long-armers.

How can we help to make the experience be a mutually satisfactory one?