Modular Robotic Dog

So I have had the idea for a modular robotic dog system. A series of heads and tails etc etc that would fit on many different central cases. As part of that I worked up an image using the design of a case I already have. Turned out so well I finished the illustration and made an ad for it.

Any way see what you guys think. Full size wallpaper at my site. And more images to come. http://pwlawrence.com/wordpress