User blog comment:C H U N K Y/Abusing Chat Hacks/@comment-7560561-20130402160058/@comment-4018164-20130402165433

It mustn't be over line height (recommended height: 15px). Try this thumb version as an image link:

http://images.wikia.com/clubpenguin/images/thumb/f/fd/Sticker,375x360.png/34px-Sticker,375x360.png