1. After you click on Edit Image, you'll land on the designer. 

2. Click on Element in the extreme left panel and then select Lines. 

3. Choose the one that you like. You can edit the line - color, angle, opacity, shadow - from the right column. 

4. Save your changes once you're done. 

Also see: 

  1. How can I change product image in my post?
  2. How can I change the background of my post?
  3. How can I add patterns to my layout?
  4. How can I add textures to my layout?
  5. How can I change the layout in my post?
Did this answer your question?