Oscar-winning costume designer Deborah L. Scott, who is nominated again this year for her work, talks about using clothes as a storytelling tool in her creations for the third "Avatar" film's new clans. When costume designer Deborah L. Scott first worked with director James Cameron on “Titanic” in 1997, she won a well-deserved Academy Award for her work; this year, she received her second nomination for another Cameron film, “ Avatar: Fire and Ash ,” and her achievement in that film is even