Here are 7 key points.
1. Is there a need for your product or serve?
2. Do you have a unique solution for this need or problem?
3. Who are the o=potential customers for your concept?
4. How many customer may want this product or service – the Market Potential?
5. Do they know they need your product?
6. How much will they pay for this new product or service that solves their problem?
6. What help do you need to develop your product or service?
7. Now go out and talk to potential custoers about your idea and see what reaction and feedback you get. You will learn from this and get validation for your idea.