Getting feedback on 3D Renderings

user forums for the software you are using would be a great place to start, since those users would be the most familiar with the software settings that could improve your 3D renderings

Based on your tags here are the Solidworks and Bryce 3d user forums:
https://forum.solidworks.com/index.jspa
http://forums.tutorialized.com/bryce-3d-74/

Those are good leads and I appreciate them.   My work is pretty good so I'm kind of looking for advanced techniques and opinions... that I thought might not be available at the products user forums.

another place to look to is industry based forums, not sure what industry you are working within but here are some:

Mechanical:
http://www.mechanicaldesignforum.com/forum/

3D Modeling:
http://www.3dmd.net/forum/

Architecture:
http://forums.cgarchitect.com/

I am mostly working in room layouts.

Furniture both stand alone & in environments.

Attached are some examples....

Essentially I think it is pretty good but sometimes I feel like there are details that I'm missing that would bring it to the next level
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