For status, comments and chat
Copy the emoticon.
Click on icon on Facebook.
Paste the emoticon in the File name field and click Open.
When you're good, you might as well tell the world, and since the whole world is on Facebook, you can make your announcement there with this majestic smiley. You might not always be an angel, but whenever you are, be sure to post this adorable smiley on your FB timeline.