The base had me thinking for a moment, then I thought: what could be better for something daemonic than to come walking through fire? So I painted the underside as flames, with VMC Dark Red and highlighting with VMC957 Flat Red, GW Foundation Macharius Solar Orange and GW Bad Moon Yellow. Finally, the ground was rendered as cooled-down lava by basecoating with GW Chaos Black, and drybrushing it with VMC Black Grey and GW Foundation Astronomican Grey.
Here is the final model in all its glory:
The whole figure required about 40 hours of work over five days: it has been an interesting experience that has taught me many lessons and no doubt will help me in the future - and, I hope, also help you! - and I would like to take this chance to thank 
Editor in Chief Bill 
for the opportunity to tackle this piece.