Add In-Image Copy
Hover on the Add Assets button on the top of the page
Click Add In-Image Copy
Input the text label and the message in the content area in the text editor
Click plus (“+”) button to add multiple copy
Your text will render exactly as you type it, so be sure to manually insert line breaks if you think you'll need them. You can also assign a color to your copy by clicking the blue dot beside the text label.
Add Out-of-Image Copy
Hover on the Add Assets button on the top of the page
Click Add Out-of Image Copy
Input the text label, headline and the message in the content area in the text editor
Click plus (“+”) button to add multiple copy
You can also assign a color to your copy by clicking the blue dot beside the text label. Out-of-image copy is automatically sized by Facebook to fit the feed, so it will wrap automatically when it's used.
Edit Copy Asset
Hover on an copy you want to edit
Click Edit (Pencil icon)
Edit the copy label and message
Click the outside area of the text input to confirm the changes