In order to submit your story, you must include a title, subtitle, text content, and at least ONE of the following: a featured image, a featured video, or select an Unsplash image to use as the featured media. Once you have all of these fields filled in, and have saved your story, the "Submit for Review" option will become available to you.
If your story has been saved, and you're still not seeing the option to submit your story, chances are it's because one of these items is missing.
Once your story is complete, Click the "Submit for review" button, choose the community where you think your story fits best (you can find a list of all communities on Vocal here if you're not sure where it belongs), and any tags you feel are a good fit.
If you've created the story to enter into a Challenge that we're running, you can do that here, too—check the "Submit to a Challenge?" box and choose the Challenge you want to enter. Then, click "Submit for review" once more to complete the submission.