For the background, its pretty much the redner in different spots and then motion blurred it, then placed the render over it again and did splatter brush on it, then just messed around with some C4D's and messed with the color balance
Omg are you a girl :O!
also i think you should remove the outer glow, and.. inner shadow i think
from the render, and replace those with some more blending ^-^
but good job, cya around!
Keep up the good work.