I think you arrived at something very dynamic. I dare you to find a way to get someone to be emerging from the top of the frame....upside down. Now that would be really dynamic. It's a little hard to make out the docs face. But that's not necessarily a bad thing.....make 'em wait till the next one.
How is the lighting done? Did you mention it? Made blue in photoshop or rendered that way?
Oh and I know you're going for simplicity, but I'd love to see something break up the line where the wall meets the ground.
PS A tip to make something stand out might be to use the ambient colour property.
PPS And I've just noticed you changed the frame colour to black. Why?