For the full series see http://tale2tell.com/premiere-pro-tutorials/
In this tutorial Andrew shows how to use the corner pin effect to replace a sign which is in perspective with a Photoshop image using the corner pin effect. Andrew also shows how to nest multiple layers such that Premier Pro sees them as a single laying meaning that they can be animated with a single set of motion controls. Lastly, Andrew also show how to smooth the animation by changing the keyframe type to a keyframe that gives a much smoother and more professional animation