Teabag folding is a form of Origami. The expression was coined by Tiny (pronounced Teeny) Van Der Plas the Dutch inventor of the technique. Based on symmetrical squares, teabag folding sheets can be folded different ways and those different folds can be combined to make different designs and images. There are a number of different folds in the instruction sheets.
The coordinated backing papers all match a parent decoupage or card topper design.