Add notes if needed. For example, you might want to tell the examiner exactly what type of bird you've just shot (with your camera).
Add a model release if needed.
Check the box at the top left of the media box when ready, then click "Submit Stock Art to Examiner". THIS CANNOT BE UNDONE, so make certain you are ready to have the artwork reviewed. You will be notified via email whether or not your artwork is accepted or denied.