Fold fabric in half along 54-inch length, wrong side out. Use a light box, if you have one, to accurately match up the edges of the printed design.
Carefully stitch along the edge of the printed design. Press the seam open, placing it at the center, and matching up the printed pattern at each end, still with wrong side out. Stitch one end completely across. At the other end, leave a gap so that you can turn the "tube" right side out. After you've turned it right side out, make sure the corners are sharp and press lightly. Using blind stitch, close the small gap by hand.