No, it's a Pixabay photo, I know it because it's in my collection, too. 😃 But if you take something from Facebook, write "Source: Facebook photo" and give a link if you can.
Giving the source is important, because people will assume an original idea otherwise. It happened to me one time, I painted after a photo on Pixabay, another painter had used the same photo, and a curator did an image search to check. I was then accused of copying the other painter's painting!
It is O.K. to paint off a photo, if you say so. It is also O.K. to paint off someone's painting, if you correctly call it a "study" and name the original painter. The important thing is to be open and transparent about it.
Plagiarism is the worst "crime" on Hive, original content is king here. Using Pixabay photos is not plagiarism, because their photos are free to use. If you paint other photos you must have permission from the photographer. The source must always be cited.
I really didn't pay any attention to these things.. but they seem very important.
Your words are logical.. I have to be more careful.
Thanks for your comment.