So far there is no such option of making tutorials or articles public or private. Say I'm writing a tutorial which is quite lengthy and does consists different object like images,text etc.
Now I would like to keep my tutorial informative plus I would also like to work on the representation part of the tutorial. In this manner I can do the complete justice to my tutorials and the readers. But for all this I'll need a good time slot which is unluckily not available to me.
So one possible solution is to write the tutorial in fragments as per the available time slots and making that work private or invisible unless it get completed. Once the whole tutorial gets completed I'll make it public and visible to my viewers.

Storing incomplete tutorials to some other places and then copying it (which may consist both text and images)once it get completed and reformatting it according to the options provided here makes the whole task time consuming, irritating and difficult for me.

I think other users must be facing the very same problem.

Adding an option of making articles visible and invisible to public will motivate users towards publishing more efficient tutorials.