Look over your peiced top from the back to ensure tension was ok on your seams and you didn't catch the very edge of a piece of fabric in your seam allowance which will most definitely tear apart as soon as we put it on the frame. If you see big loopys on one side of the seam from poor tension, please resew that seam, otherwise we have to. If you only caught the very edge of fabric in a block do something to reinforce that seam or redo it.
Clip loose threads from the top. You don't have to get every single one but if you get most it sure saves us time from having to do it.
Ensure your top is reasonably square by measuring it. If the right side of the quilt measures up at 98" and the left side is measuring 100", please try to get your quilt square by blocking it or removing borders and resewing. 90% of the time this is caused by not measuring for borders at the center of the quilt but at the sides.
Find out how much bigger we need the backing to be from the top and please adhere to those guidelines.