1, enter your own space, click the Settings button in the upper right corner, and then click the Modify Data button in the drop-down menu.

2. Pull to the bottom and click Spatial Data.

3. When you see the signature file input box, click the place with the picture logo.

4. Choose a picture, three methods can be used.

5. Click on the selected picture.

6. Then you will see the picture in the input box of the signature file, and then click Save.

7. Click on your message board and set the display signature file.

8. Then try to leave a message for yourself. When leaving a message, remember to click Use Signature File next to the Publish button and tick.

9. All right, the setup is complete. I saw the picture I set. Only when you remember to set the message board to display the signature file will it be displayed.