You can also quilt them in thirds where you pin the sandwich together than take off one third of the batting now quilt the middle then move to the other side that has batting and quilt that. Now put the batting back on the third piece and quilt that. I have also when sandwiching quilt not put borders on but allow for them when putting the front and back and batting together. You would quilt the main part of the quilt then you can lay your borders on top and sew as usual but you will be sewing thru the batting and back so that it would be quilted in the ditch already. I have tried them both and it sure does help.