Question: Which film directed by Eran Creevy was based on his teenage experiences?

Context paragraphs:
The Human Resources Manager: The Human Resources Manager (Hebrew: שליחותו של הממונה על משאבי אנוש‎ ‎ , translit.  "Shliḥuto shel Ha'Memuneh al Mash'abey Enosh") is a 2010 Israeli drama film directed by Eran Riklis.  It was written by Noah Stollman, based on the 2006 book "A Woman in Jerusalem" by A. B. Yehoshua.  The film tells the story of a bakery's human-resources manager (unnamed, like most of the film's characters) who reluctantly travels to Eastern Europe to bring the body of a deceased former employee, a recent immigrant to Israel, back to her family, in order to prevent a public-relations disaster for his company.  The first half of the film is set in, and was filmed in, Jerusalem, while the second half was filmed in Romania, although the name of the country is never specified in the film.

Birdy (film): Birdy is a 1984 American drama film based on William Wharton's 1978 novel of the same name.  Directed by Alan Parker, it stars Matthew Modine and Nicolas Cage.  The film focuses on the friendship between Birdy (Modine) and Al Columbato (Cage), two teenage boys living in a working-class neighborhood in 1960s Philadelphia, Pennsylvania.  The story is presented in flashbacks, with a frame narrative depicting their traumatic experiences upon serving in the Vietnam War.

Willy/Milly: Something Special (also known as "Willy/Milly" and "I Was a Teenage Boy") is a 1986 comedic fantasy film directed by Paul Schneider, based upon a story by the same name by Alan H. Friedman.  The film follows the title character of Milly Niceman, a young tomboy who is unhappy with the traditional expectations for her gender and longs to become a boy so she can act however she wants.  Initially released as "I Was a Teenage Boy" in 1986, the film was later re-titled to "Something Special" for a 1987 limited theatrical release and for a VHS release.

Collide (film): Collide is a 2016 action film directed by Eran Creevy and written by Eran Creevy and F. Scott Frazier.  The film stars Nicholas Hoult, Felicity Jones, Marwan Kenzari, Ben Kingsley, and Anthony Hopkins.  The film was released in the United States on February 24, 2017, by Open Road Films and grossed just $4 million against its $21.5 million budget.

Eran Creevy: Eran Creevy is a British director most famous for his films "Shifty" (2009) and "Welcome to the Punch" (2013), and several music videos.

Welcome to the Punch: Welcome to the Punch is a British action thriller released on 15 March 2013 by Momentum Pictures in the UK and Ireland.  Written by Eran Creevy, the script had been placed on the 2010 Brit List, a film-industry-compiled list of the best unproduced screenplays in British film.  With seven votes, the film was placed third.  The film is directed by Creevy, starring James McAvoy, Mark Strong, and Andrea Riseborough.

Shifty (film): Shifty is a British urban crime thriller, written and directed by Eran Creevy.  Set on the outskirts of London, it follows themes of friendship and loyalty over the course of twenty-four hours in the life of a young drug dealer, the charismatic Shifty.  "Shifty" was filmed predominantly in Borehamwood, Hertfordshire, the home of Elstree Studios.  Based on Eran Creevy's teenage experiences, and boasting convincing performances from a cast of rising stars, as well as veteran actors Jason Flemyng and Francesca Annis, the film was funded by Film London's Microwave scheme and delivered after a shooting schedule of just eighteen days.

A Borrowed Identity: A Borrowed Identity (Arabic: العرب الراقصون‎ ‎ ; Hebrew: זהות שאולה‎ ‎ ;) is a 2014 Israeli drama film directed by Eran Riklis.  It is based on Sayed Kashua's book "Dancing Arabs" (2002).  In Canada the film was released under the title Dancing Arabs, which was the film's English-language title at its world premiere (one reviewer noted that the title "will prove tricky in marketing campaigns").

Charlie Chan Carries On (film): Charlie Chan Carries On is a 1931 American pre-Code mystery film directed by Hamilton MacFadden and starring Warner Oland, John Garrick and Marguerite Churchill.  It is the very first appearance of Warner Oland as Charlie Chan.  Part of the long-running Charlie Chan series, it was based on the 1930 novel of the same title by Earl Derr Biggers.  It is now considered a lost film; however, Fox simultaneously filmed a Spanish-language version which was released under the title "Eran Trece"—"There Were Thirteen"—and this version survives.

Teenage (film): Teenage is a 2013 documentary film directed by Matt Wolf and based on Jon Savage's book "Teenage: The Creation of Youth Culture".  In the documentary, Wolf attempts to bring to life the "prehistory" of youth culture which preceded and evolved into the concept of teenage culture in the 1950s and beyond.  The film had its world premiere at the Tribeca Film Festival on April 20, 2013.  and was released in a limited release and through video on demand on March 14, 2014, by Oscilloscope Laboratories.

Supporting paragraphs: Eran Creevy Shifty (film)
Answer: Shifty