Measure the length and width of your shower. Measure the width of the shower rod in your bathroom as well.
Cut out a piece of waterproof fabric that is about 8 to 10 inches longer than your shower and 1 foot wider.
Fold over the top of the fabric by 4 or 5 inches and pin it in place. The tunnel for the shower rod should be about 1 inch larger than the shower rod is wide so it’s easy to move.
Sew the fabric in place, tucking under the raw edge with a ¼ inch seam allowance. Use a straight stitch on the sewing machine.
Remove the shower rod from the shower and slip the shower curtain onto the rod. Place the rod back into the shower.