[4] In 2014 also co-wrote and co-directed the short film Two Devils, with Van Diemen's Land director Jonathan auf der Heide.
[5] In 2015 Erdstein commenced production on his debut feature, That's Not Me, which filmed in Melbourne, Australia and Los Angeles, USA.
[10] The Guardian ranked it #5 of the Top 10 Australian Films of 2017,[11] with critic Luke Buckmaster giving it a 4 star review.
[17] Jake Watt of Switch called the film "a marvel of indie ingenuity, with dollops of charm and confident direction.
"[18] Karl Quinn writing for The Age said the film was "bursting with comedy, humanity and interesting ideas",[19] the Huffington Post called it "a stunning exploration of identity, the industry and the thirst for fame…the perfect blend of comedy and tragedy",[20] whilst Concrete Playground praised it as "earnest, astute, insightful and thoroughly amusing.