Any age really
An 11-year-old boy can audition for a movie at one of the studios in Hollywood, CA.
i think 13 or older
As of July 1 2011, there are no plans for a Warriors movie. Sorry.
You can't audition for his 3D movie
You can probably audition for one of the Volturi (the "royal" vampire coven)
Talk with your agent about getting you an audition.
I believe you audition in Hollywood, California
Audition.
How you can star in a movie is that you have to audition to be the star in a movie.
you have to get an agent and normally if your agent thinks the movie is appropriate they will ask you if you would like to audition for it and if you do then you go to the place that your agent tells you that is hosting the shoot and you go and audition.
never
A brain