That's a good tutorial video, Carol, but I think content aware will not work for terri's photo because the background behind the entire length of the pole is too varied (not just leaves, but also parts of arm, parts of railing, grass, tablecloth). Content aware works best when the object you want to disappear, is surrounded by the same background. So it worked well in the video example where the "stray bird" appears in front of a background of clouds.
Content aware takes the drudgery out of manually cloning background to cover something up. However, if it can't be done manually to look natural, then it can't be done with content aware either.
When the offending object is close to people, content aware may start cloning extra people parts. Freaky.
I did have trouble trying to clear up some background in a photo of me holding one of my cats. All I got was the cloning of extra people/cat parts. Freaky it was.