Originally Posted by May in Jersey

I like rectangular quilts as people who use them are usually longer than they are wide.
Simplist way is to make the top and bottom borders wider than the side borders.

Another technique is to 1) add the inner border, 2) make a checkerboard strip from 2 fabrics in the quilt, 3) add the checkerboard strip to the top and bottom, and 4) add the outside border.