Critiquing your mind movie is important so you can first get a taste of what your story is doing. Really critique the basic principles of what you saw in your head. Are the characters really interesting? Are you bored with your own story of endless dialogue? Are you confused about why certain things happened without explanation? Are you out of breath because the action was just so intense? Did it take three days of thinking of this story before it got to the point of a subject? Are there too many plot twists that you, yourself, can’t keep up?
This is your opportunity to casually breakdown your masterpiece before someone else does it and the average reviewer has no love for wasted time and confusing and tortured storytelling.
Never, under any circumstances, be afraid to say your own story is not up to standard. If you did not do something stupid such as provide a release date for your book before you finished it, then you can take all the time you need to perfect it.
No one—NO ONE—has a perfectly told story on the first draft; so enjoy the company of the greatest authors on Earth who wrote their first draft and then tossed it—angered at their dribble and hack—only to later chip and massage the story into multiple drafts for bestseller worthiness.
The Way of the Author is not to rush the first thought you have onto paper, but to consider who will be reading it and nurture the life into the story so it can be consumed and enjoyed.
Rush a cake or a pie—how many people will eat it?