You can submit an entry to a Challenge right from the Challenge page. Just click the “Create a story” or "Submit a story" button—you'll be able to create a new entry entirely, or enter pone of your already-published stories to the Challenge.

If you're creating a new story, when you’re ready to submit it for review, just choose the Challenge you’d like to enter from the drop down Challenge menu, and complete the submission as normal. 

Did this answer your question?