To use in a comment, there's an option on the bottom left of your comment box: "Add Media". Click it. Then search for my name, "Elsawww", or "Frozen". Click on her icon to have a never-ending supply of adorable.
my reaction : oh come me beatufiul get youe but over here come on I don't bite I can't help it at all ;n; *sighs* never been in real love before with a beautiful girl like that and i'm a nice guy and elsa really likes me too
When writing a comment, you'll see that there's an option to "Add Media" on the bottom of the text box. Click that, and you can search for whatever emoticon you want. If you want to use this one for example, search for "Frozen", "Elsawww", or my username and it should appear. Then you can select it and it'll appear on your text box, and you can use all the icons you want.