That’s great, there are lots of different kinds of screenplays you can write.  For example, maybe you’d like to write a historical fiction film screenplay, or a children’s screenplay, or a comedy screenplay.  Which of those seems most appealing to you?
assistant
That’s exciting!  Screenplays are movies or plays that are written to be presented visually on film or TV, and are basically a kind of detailed storyboard or script.  There’s a generally accepted format for screenplays, which is to list episode hints for each scene on one page, and then use a second page to elaborate more on those hints.  This format is usually written as a kind of outline, rather than a narrative prose or script, and screenplay formatting directly corresponds to the formatting in a film or TV filming script.  Professional screenwriters often use “scriptwriting software” programs to actually write the screenplay, and a lot of these programs are designed to look like Word or other text editing programs.  You can also use paper and pen, and there are even screenwriting teachers and workshops you can attend.

Eventually you might hire a professional screenwriter to write your screenplay for you, or you can get assistance creating the screenplay from a filmmaker or agency.  Screenwriting is a very popular and competitive profession, so it can be hard to find professional representation as a screenwriter.  Many professional screenwriters also also write scripts to be adapted into other movies or TV shows, rather than get involved in every step of
assistant
I want to write a screenplay.
user