First, click on the tab on the screen that has your user on it, located at the top far right corner of your page.
In a successive line, you should see My Profile, Inbox, Works, Library, Invite Friends, Language: (insert spoken language here), Help, Settings, Logout. Click on the bit that says Works.
Once the page loads up, You'll see your list of stories. On the far right, you'll see three odd looking icons. The one on the left that is made up of three lines in a row is the Writer Analytics Beta. In short terms, it means you can see the statistics of unique views, comments, and votes that you've had on your story by the day. The next one looks sort of like a < is the share button, where you have the option to share it by Twitter, Facebook, E-mail, or Tumblr. Next is the one that we are actually looking for; three dots . . . Click on the dots, and you will have the option to delete, or unpublish your entire story. Click delete, and then it goes BYE BYE!! Make sure you actually want to do this, or else you will lose all of your work forever.
Hope this helps!!!
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Wattpad How-to's
RandomI'm just putting this here for my own personal convenience so that I don't forget. Though you could use this too if you wanted. :-)