Click on the user name

Click on my post bar

Click signature file settings.

Add picture address

(Right-click the picture-Properties-right-click the link behind "Address"-Select All-Right-Click-Copy)

Paste it into the picture address box set in the signature file.

It can be used when you are ready for the review.

The audit usually takes half a day, which is ok, not too slow.

In addition, once the signature file is set, it can be changed, but it cannot be cancelled permanently. You have to manually cancel the signature file every time you don't want to use it, so be careful when adding the signature file.