To add a category to an image (e.g. FanArt), follow the steps below:
- Hoover your mouse over the "Explore" group in the top navigation panel. Then click on "Images" in the drop down menu.
- Click on the picture you want to edit.
- In the "pop up window", click on the "More Info" button (top right corner).
- On the image page: Scroll down to the bottom, and click the "Add category" button.