About 

The CardBuddy can be used to quickly place 3D cards into your scene via a 2D screen space sampler. It has built in preview/calibration features to help you place your cards easier, and can switch between placing images directly on cards in 3D world space, or via camera projection. Any cards placed can also automatically generate holdouts based on world position, point, or deep data

You can read the full documentation for the CardBuddy here

 Features 

Press and hold Ctrl+Alt while using the Position sampler on the preview image, to place 2D elements on 3D cards anywhere in your scene, without ever using nukes 3D viewer

Generate holdouts automaticly using a variety of methods

Place images on cards in world space, or via camera projections

 The Buddy System 

This is a suite of tools I've been working on, which is designed to help compositors of all skill levels accomplish fundamental tasks, quickly and intuitively

If you'd like to learn about the other Buddy System tools you can find them here, and feel free to reach out if there are any issues, or if you have ideas to improve them!