We don't really have a process, but after years pitching and developing movie scripts, here's kinda how we think:

1. Can you explain the idea in one, declarative sentence?

2. Write out the whole project, and the revenue model, on a single sheet of A4

3. Don't create solutions for problems that don't exist

4. Get independent, verifiable market research. Anything else is just your opinion

5. Keep computer stuff out of the conversation when trying to raise funds

6. Never, ever, ever give up