Whatever art form you're working in, it's crucial to see it clearly, to feel it clearly, and not to worry about the results, or how someone else will see it.
From a writing point of view, you now have teams of screenwriters working with a director. What's lost in the process is the power of that one heart, brain, gut and soul that makes something an original piece of writing.
Neither comprehension nor learning can take place in an atmosphere of anxiety.