Harry Frank show how to create a 3D environment in After Effects by Warping 2D Images to Build 3D Layers using RG Corner Pin Warp. Check out the Warping Images to Build 3D Layer Environments in After Effects tutorial here.

From the tutorial description: In this multidimensional episode of Red Giant TV, Harry Frank walks you through creating a 3D environment from a 2D image, all in After Effects. You’ll also learn some great compositing and color correction techniques to finish the job off right.