1. First, you must show the comments. Click Review > Show All Comments, and the comments have been displayed.
  2. Click on the border of the comment, and then right-click, choose Format Comment from the menu, and a Format Comment dialog box will display.
  3. Click Colors and Lines, and then click the Color drop down list, and choose Fill Effects.
  4. A Fill Effect dialog box will pop out, click Picture, and then click Select Picture button.
  5. Specify the picture that you want to insert into the comment.
  6. Click OK.
  7. Click OK again … the picture has been added into the comment.