Read this and see if you have the skill set...
Casting Director - Skillset
And, from
http://entertainment.howstuffworks.c...-director2.htm (bold emphasis mine)
Education
To understand the industry,
you'll probably want to study at a two- or four-year college that offers classes in film and theater arts, such as acting and directing, as well as business management. Casting directors need to know
how to negotiate contracts and understand the complexities of working with union employees.
You should also take acting classes. Casting director Kim Petrosky notes in the book "100 Careers in Film and Television" that acting classes will help you understand actors and the acting process, recognize talent and put actors at ease for better audition performances. In fact, starting as an actor can lead to a career as a casting director