Quote - Another Dress for Antonia, enjoy

That looks great. Thanks rjjack! 

Quote - ... does anyone think the image I posted here is ready for the gallery, or does it need more work?

To my eyes, the thing that stands out as needing attention is the explosion behind Antonia. That should be a major source of light, and although I've never seen a real Martian war machine, I imagine the rays coming from its weapon would be bright too.

Try using the ambient channel to make these props light up. To simulate the light they cast on the scene, I'd try placing a point light at the position of the explosion, appropriately coloured. Turn off shadow casting for the prop, of course. You'll probably have to refine things once you see a render, and I daresay BB may have some more detailed ideas on the subject. 

Edit: this thread in the critique forum may (or may not) have some ideas.