I love landing pages and LaunchRock is one of the best. The beauty of a landing page is there's almost no wrong answer. In other words, use landing pages as a means to gauge how people might respond to you. They enable you to A/B test which basically means you can experiment with slightly different versions of the same landing page to see which gets more traction.

The first question I'd ask you is who is your intended audience? You obviously built a prototype of some sort. If I were to assume you've solved a problem, who did you solve it for? When those people are out searching for a solution to their problem, what are they searching for? How does the conversion sound? How can you use your landing page to insert yourself into that search?

There's not enough room here, but a using a landing page as part of a user onboarding, education, lead gen..... (whatever) strategy is a very good idea. You also may not know some of these answers, so using a landing page will inform you of who is actually interested in what you're offering. You may find it's a different market altogether.

Anyway, just a quick handful of thoughts.