Sticker uses a small jquery plugin called sticker.js to create an animated "peeling" effect to simulate that of removing or adding a sticker. The CSS is used to customize the appearance.
Fortunately, this plugin does NOT depend on any particular version of jquery, so it should work with older versions of Concrete!
There are two (2) options for displaying a sticker. The first is an image sticker. Simply choose an image, set the desired width, and you can even rotate it left or right! Negative values rotate to the left; positive values rotate to the right.
The second option is a plain color sticker. Simiply choose the color and set the width. Make sure that there is no image selected.