After you have written your story, read it backwards, word for word. Reading it backwards makes you notice the words more and you can check for spelling errors.
Reading Backwards To Forward Your Writing by: Audrey
That's a great tip.
This is what proofreaders do. When proofreaders are checking the final copy against the marked up copy -- the copy that has been edited -- one person reads backwards word for word while the other checks what is read.
For finding spelling errors, your tip would work well.
Of course to check things like the flow of ideas, reading forward works better.
