How would one add 'stickers' to an Air app?

It seems possible, given this article: WeeMoji – Emoji Sticker Maker | Yeah, But Is It Flash?

However, I can't seem to figure out how to go about this. I don't need to make dynamic stickers. I would be fine with some premade static and animated stickers. It seems like it should be a relatively simple thing for me to add.

Ideas?