Just how to compose television specifications for adapted show?

With this week’s visitors’ Mail, Jason miracles:

I desired to inquire of about composing a spec script for the current series that is it self an adaptation. Let’s state i do want to write a spec for a television show centered on a book that is comic Daredevil, Jessica Jones, Arrow, The Flash, etc – or one according to a few novels – Hannibal, Game of Thrones, etc.