OK. Let's see the first option ...

Method #1: Manually uploading your thumbnail image

It's very straightforward.

If you are sharing an article on your Facebook page, and it doesn't pick up the correct thumbnail, you can click the upload link to manually upload the image you want to use.

The uploaded image is stored in the photos section of your Facebook page.

Facebook will continue to show the image you uploaded as the thumbnail for the article in your timeline:

The problem?

This solution doesn't affect other users.

In other words: if other users will share your article, then it may still show the incorrect thumbnail!

In the next lesson I'll show you how to take care of that part too ...