I'm making this scene from a concept art I found online. I'm looking for advice for things that can be improved and have it look more interesting.
EDIT: The original concept was done by Ben Procter. This image was grabbed off of Jake Virginia's website. Thanks for letting me know!
Here's the original image:

Here's the scene in UDK so far:



Thanks!
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Underneath the bottom of the large pipe I had the ground lowered for water.