Danger Keep Out Quarantine sign.
Just in case you didn't see the swarming hordes of zombies around you.
The screenshot isn't the best quality because my graphics card sucks, so it doesn't render the color correction or film grain. But I did turn everything else up for taking the shot.
Detail: Nice detail! The peeled away paint makes it look older, as the dried up light colored blood does too.
Originality: Although from l4d, I didn't see anyone else making one :P
Realism: Looks good, there is a glare, so when I use this in my map (thanks again for letting me!) I will have to put a light source by it to make it real.
Pros: GREAT textures, everything looks real, very detailed.
Cons: The shine could have been taken out (not everything is shiny from one angle), Nothing new but it looks good.
Improvements: Remove shine, possibly shrink? idk
Notes: Still is awesome :D