At least 2 days in advance, make fountain base ring. Fold a 25 in. sheet of waxed paper in half; wrap around 8 x 3 in. pan; tape seam together. Tint 2 packages gum paste blue; roll out 1/8 in. thick. Cut a 15 x 3 in. strip; imprint design using Fondant Imprint Mat. Wrap around prepared pan, smoothing seam with fingers. Using bottom opening of any standard tip, cut a small opening for fountain cord in back of ring along bottom edge. Let dry for 48 hours.