MoreAboutMe multimedia stickers come in two kinds: as pre-printed stickers or as digital, downloadable stickers. Both kinds of stickers are configured exactly the same, they differ merely in how they are used. The physical pre-printed sticker is obviously simply removed from its backing and placed next to the photo or wherever you want. The digital sticker is downloaded from the MoreAboutMe.org site as an image file (.png) and is then treated like a photo. You can insert it into a Word document, greeting card template, photo book layout, etc. just as you would a photo.
This document explains how to configure a pre-printed sticker.