Relax; you needn't bother with to be a product engineer to make a draft. You want to make a show of what you are anticipating with regards to usefulness, front-end (the piece of application clients see), and backend (the server side where the cycles occur). Project scope implies what ought to be finished and the normal outcome. One can involve different arrangements as an illustration to make sense of the elements they need to have.
It likewise will be perfect to have several client stories - the errands and exercises future clients will perform with the arrangement.