Each length of tulle should be about 2.5 yards (2.3 m) (2.3 m).  For a fuller loofah, you could create more bunches of tulle. Create an even number of bunches so that your costume will still be proportional. The lengths do not need to be cut perfectly or with precise evenness. They should all be close to the same size, but by the time you finish, it will not matter if a few are shaped a little differently than others. You could also use nylon matte netting instead of tulle. Fold one piece of tulle in half lengthwise, essentially halving the width. Repeat with the other pieces.    Fold one piece of tulle widthwise into thirds. The length of the tulle should be one-third of what it was.  Repeat with the other pieces.     Do not worry about making exact or perfect folds. Pinch one piece of folded tulle in the middle and tie it in place with a small piece of 1/4-inch (0.635 cm) elastic.  You could also hold the bundle together by twisting an elastic hair band around the center. Use your fingers to gently fluff the tulle after bundling it together. Repeat with the remaining pieces of folded tulle.

TL;DR in Chinese:
把薄纱切割成八大块。 将薄纱折叠一般。 把每块薄纱折叠三分之二，把一块薄纱横着折成三截，薄纱的长度应该变成三分之一。 把每块薄纱都捆成一捆。