Pitching your project, product or service is a necessary step in entering a new market or a segment. It is a necessary skill in getting the word out, in attracting investors and in staying in business in general.
Furthermore, during your presentations you should be prepared for all the questions that might and will come your way. You must do your due diligence, your research on your markets, competitors, your products and services as well as on those you will be pitching to. You have to know it all and be prepared BEFORE you step up to that opportunity as that one event could have a significant impact on the overall success of your product, services, perhaps business as a whole. Do your homework, know your audience, it will make all the difference.