Create a new image title somewhere -- that's the key.

Whenever you see a red image title, click on it to upload the image.

So, how do you "create a new image title somewhere"?

  • Add the new image title to your user page
    • Add [[ File:filename ]] to upload.
    • Save the page (shift-alt-s)
    • Click on the red image title and proceed to upload.

That's all there's to it.