I have a plot in mind without any details. I am planning to write it down as a story and then a screenplay, without any background in writing or reading books but just watching movies. When going through online articles its seen that following certain structures for plots is useful and is widely followed by many. One example is this.
Now I wonder if I should just write what comes to my mind or plan and do some homework and build the story methodologically. What usually works good in writing?
PS:I'll provide a rough synopsis on request if that helps.