Summarize the following:
Turn the unsewn end in on itself so the edges are not visible.

Summary:
Cut the remaining side piece to a width of 5 inches, and fold in half lengthwise  Sew along the length of this piece. Measure around yourself, while wearing the dress, where the top of the dress meets the skirt. Cut the tube so that it is that length, plus approximately 2 inches. Sew one end together, then turn the tube inside out so the rough edges are on the inside. Fashion a bow or other decoration out of the remaining length of tube. Sew the decoration onto the closed end of the tube. Decide where you want the bow or decoration to be, whether at the front of the dress or at the back and, while wearing the dress, pin the other end of the tube to the dress, so that when wrapped around the decoration will be in the correct place. Sew the tube into place. Sew two poppers at the finished end of the tube (the end with the decoration), and sew the corresponding parts to the tube near where it is attached to the dress, so that when wrapped around the belt is neither too loose nor too tight. Make any finishing touches or alterations that you wish to make. Finished.