Your product pitch isn't going well and the reason is suddenly clear. No-one else thinks the idea is much good. If only the clock could be turned back and an extra week spliced in, then this could all have gone so much better. Or could it? Here's the checklist you'd have needed; filled with the 12 essential things you already knew but somehow forgot this time.

Rule#1: Explain the usefulness of the idea in one sentence

Any aspiring moviemaker, salesperson, social networker or evangelist knows that you have to explain your killer concept in 30 seconds if you want anyone to listen. Yes, the old elevator pitch. It doesn't hurt to relate it to what your listener already knows too. There's going to be a hiccup if you've got to explain particle physics before they get it. Before your audience starts getting ideas about how close this thing is to reality, BJ Fogg recommends explaining how long you've been working on this right up front; to create a realistic expectation.

Rule#2: Show that the product is dramatically better than current products.

According to Doug Hall, it is critical to explain the one or two most important benefits of your product. Surprisingly, mentioning any further benefits actually decreases your chance of success. That needs to be immediately followed by two supporting arguments. Firstly, why should anyone believe that you can deliver those benefits and secondly what is the most dramatic, meaningful difference between this and other products?

Rule#3: Understand exactly who will buy the product.

Google probably knows more about you than your own government by now, so it follows that you could find out quite a bit about the exact kind of person most likely to buy your product. If that doesn't work you could always buy some research. What about their lifestyle drives their burning desire for your product? Very often, you'll learn more from observing the way people feel about things than how they are able to articulate those feelings. What about them will cause them to perceive your product as really quite a lot better than alternatives? The sagest advice is that if everybody is a core user, nobody is a core user. It is extremely unlikely that your product will make dramatic difference to everybody, all the time.

The Perfect Product Pitch is a 4-part series by guest contributor Tasos Calantzis of Readymade. It covers the 12 essential things you already knew about pitching a product idea to your boss, client or VC guys but forgot last time around. Thanks go out to Dave Bayless at Evergreen Innovation Partners for providing the basis for this series.