I've FINALLY finished Iron Train (thanks to Leon helping me out with a spare to repair the Damaged base).
I used almost all metalics, and wanted him to look "bashed together" rather than slick - I felt that was the intention of the model anyway, so it made sense (well at least to me it did LoL).
I also wanted it to look a little rough and ready, so I used a lot of "oily" glazes here and there. Tamiya smoke is the best one I've ever used for this sort of thing.
The last thing I wanted was a (sort of) Iron Man tribute, hence me using Red and Gold on the model. I actually tried Metallic Red first - but it looked terrible, even with glazes/washed over the top.
I'm quite happy with him, I might go back and do the coals - the orangey shading on them is barely visible for some reason.
I REALLY want to finish Doctor Hadron and Tritonious before my Ulthars Arrive LoL!
Fingers crossed - he, he, he . . .