Having a large number of followers may attract more attention from some casting professionals. However, for many casting directors and filmmakers—especially in films and series—this is not a deciding factor. They focus primarily on your acting ability and how well you fit the role.
That said, here are some basic ways to grow your following:
1) Post consistently
2) Show your personality, not just polished photos
3) Share behind-the-scenes moments, practice sessions, and your creative process
4) Engage with your audience
Casting decisions are not based on follower count alone, but strong engagement can make a difference—especially in commercial work.