I had a look at the scene and it looks like a good start.  However, It
doesn't use area lights like I thought you had said.  On another note, I
don't think it's necessary to use parallel lights, probably doesn't make
much of a difference though as long as your light dome is big enough.

I must say that I really like the texture on the sphere.  I've been meaning
to try something like that for a metallic paint finish for cars and stuff.

Keep up the good work.

-tgq

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