Thank you for this. I'm about to take my first quilt top to have it quilted. I've always made tops that I could quilt on my Bernina and am a fairly new sewer, 4 years. This top is a king so there isn't any way I can do this myself. I now know what to look for before taking it to the quilter. Yes, tell your customers what you expect from them so you can give them a beautiful quilting job. If you return their quilts less perfect then they expect you know who they will blame, because they don't know it was their work that was the problem. I'm sure it would also take the fun out of quilting for you also and if it's not fun and profitable why do it.
Happy quilting!
Mia