After researching how to create a screenplay I learned you should write an outline of every screen before actually writing it. You should also keep in mind to write a marketable screenplay. Most screen plays don’t get turned into movies and only a few hundred are are purchased. Your script must begin with a plot and lead the characters on an adventure, while keeping in mind that you want to have peoples attention.
sources: https://writingcooperative.com/10-things-you-should-know-before-becoming-a-screenwriter-4cebedcbbc33
https://www.writersstore.com/how-to-write-a-screenplay-a-guide-to-scriptwriting/
The Vanished 