Hey, glad you like it, even though 50% of the artwork was hidden in the book, hahaha.I used Maya but Sketchup will do the job perfectly! I'll warn you though, the 3D blocks is the easiest, fastest part of this process. All details other than the blocks were painted patiently by hand: cables, vehicles, windows, lights, roofs and building designs and the character, aside from it's face, are painted. If you enjoy the modeling though, you can try and model the whole thing in 3D if that's what you like. ^^ I used the simple 3D blocks to help get the perspective right, that's all. Have fun!