Define what product you will build for your final project.
In doing so, answer the following questions in as much detail as possible:
1. What is the goal of your product?
2. Who are you building this product for?
3. What specific problem is it going to solve for your users?
4. How are you going to deliver this product? (Is it a smartphone app or website?)
Feel free to further elaborate on the rationale for your product, but at the very least, these questions should be answered.