Kristen Stewart never questioned her ability to direct when it came to making her filmmaking debut "The Chronology of Water," but when she got to post-production, she thought she had "ruined the movie.

Adapted from Lidia Yuknavitch’s acclaimed 2011 memoir of the same name, the film stars Imogen Poots, Thora Birch, Nick Cave's son Earl Cave and Sonic Youth bassist Kim Gordon.

Kristen Stewart said on Saturday that making her directorial debut with "The Chronology of Water" at the Cannes Film Festival felt like sending a child off to school for the first time. "I'm so proud of it.