Q. What Are Card Toppers anyway?
A. Something to decorate the font of a card with basically.Usually a main image or message.
You have your basic card stock or base, try different backing papers. Use what you have at hand. Try ripping backing papers instead of cutting them - adds a rustic feel.
Embellishments - anything goes here - images, charms, buttons, ribbon, string. Have them or not.
An example of a finished card. You can treat any image as a topper. Just let your imagination run riot.