Apply borders correctly so there is not extra fabric causing the borders to ripple. Click here
for a link to a you tube video showing how to correctly apply borders so they will lay flat and your quilt will be square.
Sew around the outside edges of your quilt top a scant 1/4 inch from the edge. This will lock all the seams that come to the edge of the quilt and keep them from coming unsewn as it is quilted. This is particularly important if you do not have borders or if the border has a lot of piecing, such as a piano-key border. This will also help keep any bias edges from stretching. When we mount the quilt on the machine table, seams that are not lockstitched could possibly start to come unsewn when handled.
Give your quilt top a final pressing - seams should be pressed to one side and should lie flat.
Look over the front of the quilt top for threads protruding from the seams and trim them off. Loose threads on the back will be sandwiched between the quilt layers so aren't an issue unless they are dark and show through light or thin fabrics - in which case you will want to make sure they are also all trimmed.
Also inspect the quilt top to make sure you do not have any holes - holding it up to the light will help you see these. If you missed an area while sewing a seam, resew it as necessary. We don't want any holes to catch on the quilting foot as it is machine quilted - this can ruin the quilt as well as the machine.
If you have any loose flanges, pockets, or appliques that are topstitched more than a thread or two from the edge, the quilting machine may catch these and flip them up and sew them down the wrong way as it passes over them. Be sure that every element is sewn down securely right on the edge so the machine can't catch it and turn it over and stitch it the wrong way.
Also, if you are planning to add any embellishments to the quilt such as buttons, beads, sequins, or crystals - wait until after it is quilted to do so. The machine may hit them and break the embellishment as well as a needle.
Prepare the backing by measuring the quilt top, then add at least 6 inches across and 10 inches to the length of the quilt for the backing. If your backing fabric is not big enough, seam it as necessary
. (you-tube video showing how to seam backing). Trim off the selvedges if they are in the seam as they may otherwise pucker.
Make sure your backing is pressed and square. Wide backings especially are often rolled on the bolt unevenly and have lots of wrinkles pressed in that will show after the quilt is quilted if not pressed out. They are also usually not square as they are cut from the bolt so need to be squared up. You may find this video helpful. Squaring up a quilt back.