Upload to Wikimedia Commons?
Fragment of a discussion from Talk:Wikieducator rich text editor tutorials/Images/Basics
Perhaps add a link to Commons upload page? (and mention that the same file name can be used on WikiEducator to display the same image). There is a lot written about this on Wikipedia and Wikimedia Commons if anyone wants to write a tutorial (minor extension of this one). For example: Moving files from Wikipedia to the Commons.
