Step1
Update your resume. Producers and story editors don't have a lot of time, so keep your resume short and simple. Adjust your resume to the type of shows you're most interested in pitching. If you want to write for a comedy show, put your comedy credits first. Take out extraneous material: education, non-writing jobs, etc. Have an electronic version of your resume ready to e-mail
Step2
Contacts and networking. This is a business of relationships: it's who, not what you know. Keep track of producers, story editors and other writers and stay in touch with them: coffee, lunch, just a telephone call keeps your name in their mind.
Step3
If you have an agent, keep him or her happy. Agents aren't paid to get you work. Call your agent once a week. Agents, like everyone else, tend to forget about you unless you keep reminding them. Their job is to negotiate the deal once you get an assignment. Remember that you're in charge of your own career; don't depend on agents to do your job for you. Make as many contacts as you can.
Step4
Know what's being bought. Keep track of shows in development and in production. Read the trades, Variety, Hollywood Reporter, etc. Ask fellow writers, your contacts and visit both studio and production company sites and fan sites on the Internet.
Step5
If you've never dealt with a story editor before, he or she will want to see a sample of your writing. Keep your spec scripts current; no one wants to read an old show. Make sure your spec is in both the genre and tone you're pitching to. Before you start a spec, read sample scripts from the show you want to write for.
Step6
Know the show you're going to pitch to. Read sample scripts if available, watch episodes, and ask to see the bible. Start your pitch with a hook, something that will grab your audience. Pitches should be short, lively and intriguing. Practice the verbal pitch several times before you give it. You need to show that you’re really excited about wanting to write for this series.
Step7
You came, you pitched, you got an assignment. The story editor liked your story, the producer agreed, and they tell you to go home and write an outline. Get a sample outline or two from the show. Follow the format, noting act breaks, length, and style. An outline tells the story editor how the story unfolds scene by scene. The story editor is in charge so do as he or she says.