Put together a short, but compelling case for your project including the user need, the insight and proposed solution direction, summary of work to date, the real challenges you face, the investments necessary, and its ultimate value should you be successful.
This pitch will be important for securing local support, partnerships, financial resources, and organizational commitments. The pitch should be short, but well-rounded and not just a description of the solution. Demonstrate your commitment to the project by being both an advocate of it as well as a good listener to those who help shape it. Make small progress and share it. People who see the idea moving forward will gain respect for it and interest in its success.