As a first introduction to any casting director or talent agency, you should send a headshot/resume with a cover letter. Keep your cover letter short and to the point. If you have a professional reference or referral, include that person’s name in your cover letter. Otherwise, give a brief update on your recent work in the industry, pointing out any positive press you may have received. Unless you drastically change your look, I would suggest sending an updated headshot and resume every six months.
In an age when Breakdown Services gives casting directors instant access to our portfolio of stored digital headshots and resumes, it might be tempting to abandon the idea of lugging physical headshots around. One fellow acting blogger actually got into a casting nightmare over it. Here’s why I think we shouldn’t be entirely paper free yet.
Headshot and Resume Information - TV Show Casting