What comes to mind when you think about turning your passion into a business?
What are you currently making or doing for free that could be marketed?
Do you have a solution that could become a product or service?
Do you have any visible/tangible manifestations of that idea?
What would it take to start producing/doing something from your idea on the smallest scale possible?
What is the closest thing to that idea that is currently being offered?
What existing business or other entity (nonprofit, government body or agency) might possibly be working on an idea like yours? Who might be interested in it?
Who would be interested in buying your solution? Why would it appeal to them? What do they need?