Don't Panic poster- 'Machine'

I did a version of this a while ago for a Don't Panic contest...again..., but i have since edited it vastly since then and made it a bit better looking.
The theme was 'Machine', so my poster is based around the question 'What makes the world go around?' This means that, in my head, the whole planet is a machine, manned by little creatures whose underground lives affect the actions above ground.
Cute, but surreal.
I have done 2 versions- a coloured one and a black and white one.