The light bulb is modelled very well. Just needs some more poly’s. You can see some edges on the fixture. Either use subsurf’s or do a beauty smooth. Should solve that problem. The actual bulb is very well modelled. Good use of detail on the interior construction of it.
The Old Ranger is a great image. Very nicely modelled and textured. But why can you see through it? I can see the stars in the background through the ship. Was this also rendered in POV Ray?
if it was rendered in Blender, can you tell us how you got displacement mapping to work in blender? if I’m not mistaken, blender did not support disp mapping.
I saw this function in tutorial. In blender this is called noise in edit tab. Try this:
make UV sphere (100, 100)
add material whith some image as texture.
Press Tab and in edit tab press few times noise button.
Should work.
As I see this work only in one axis then best idea is using this for terrain modelling.