Hi Angelo –
I have a couple of suggestions for books:
Motion Graphic Design: Applied History and Aesthetics, by Jon Krasner
Design Essentials for the Motion Media Artist, by Angie Taylor
I would also suggest books on color theory, design (and not necessarily motion graphics design – good design is good design, no matter the application. Take a stroll through the books on the Focal Press website, and look around. There are loads of visually rich books on design, color theory, and topics you might not think apply, which will expand your visual sense.
Also look at what other people are doing – which you are doing, it seems, from your example. Pick the stuff you like, and deconstruct it, then duplicate it. It will start building ideas on how to depart from the copied stuff, once you know how it’s done.