At Forever Geek:

Part 1: Preparing the content

Create a script. Unless you’re an experienced talk show host, then you’d need a script or at least an outline to guide your show. Otherwise, you’d have ten minutes of umms, ahhs, and errs which will surely annoy your audience. Some prefer podcasts that are spontaneous, while others prefer clear-cut 'casts with a definite message. But I think it's best if you have at least an outline or a summary of the flow of what you would be discussing.

Here’s a rule of thumb you can follow in creating a ten-minute podcast:

• 10 seconds: Intro music or audio
• 20 seconds: Introduce the podcast. State the title, your name(s), and the purpose of the podcast. Also state the URL where your podcast and the show notes can be found. Introduce your guests, if any.
• 10 seconds: If you have any sponsors, mention them now!
• 20 seconds: Provide a brief outline of your show, if you have a script; if not, state here what you plan to talk about.
• 9 minutes: The main body or discussion
• 20 seconds: Wrap up the discussion, outlining your main points. If you have guests, take this time to thank and acknowledge them.
• 10 seconds: If you have sponsors you’d like to mention again, now’s the time!
• 20 seconds: Introduce the podcast once more. State the title, your name, and the URL of the podcast and show notes.
• 10 seconds: outro music.
• Optional: 3 to 5 minutes: Podcast-safe song or piece from an independent band or artist at the end of your show