To thrive as a Costume Intern, you need basic sewing and garment construction skills, an eye for detail, and a relevant background in fashion, theater, or design. Familiarity with tools like sewing machines, fabric care equipment, and costume tracking software is often beneficial. Flexibility, strong communication, and a willingness to take direction are important soft skills for supporting the design team and adapting to fast-paced production changes. These abilities ensure that the intern can efficiently assist with costume preparation, organization, and collaboration in creative environments.