TRSE How To Draw Tutorials:
Super Sailor Moon's Long Ribbons from her Back

   Super Sailor Moon's long zigzagging ribbon on her back looks tricky to draw, but it's actually easy to draw once you know how to draw such ribbons.

    Make a circle that is to be a center of the ribbon and two long lines extending from the circle.
 

    Add the triangles to form the bows, and lines to form two very shallow & curving (in respect to the gravity) triangle as shown in the picture.

    Draw a zigzagging line on each ribbon.

    Draw the curving lines (shown by the arrows), and you're done!

    That's the basic way of drawing the long ribbons. Drawing the ribbons at varying positions such as having them flagging in the wind is more complicated. So you'll need to use your head to imagine how the ribbons should look in a certain position, and practice on that.