Compare the measurements of your assembled quilt top with the mathematical dimensions of the finished quilt top given in the pattern. Do this by taking the finished width—or length—times the number of blocks, and the finished sashing width—or length—times the number of pieces. Are your measurements the same as the pattern’s instructions? If the two numbers are similar, use the pattern recommendation for the border sizes. If the figures are quite different, use your actual quilt center measurements and make any necessary adjustments.