Watch Hollywood - The Second Step (1936) Official Trailer

This short follows the early career of actress Jane Barnes. She starts by doing extra work. After several months she is offered a studio contract (the "first step"). However, her work consists mostly of fashion shoots and bit parts that end up on the cutting room floor. She is even used as a stand-in for Maureen O'Sullivan on the set of a Tarzan movie when camera angles and lighting must be set up.