Mars' Final Stand

While reading a story, I was inspired by a scene where a character uses a volcano on Mars as a last attempt to wipe out overwhelming odds. Here's my interpretation of what might have happened. I'm not satisfied with the characters face, but everything else turned out quite nicely I think.

One of the hardest things to find was reference for lava. I wanted lava waves, but most pictures are more like explosions. I ended up using Disney's Fantasia as guide. Hard to imagine all that was hand drawn.

EDIT: So I've tried to upload some progress pictures, but I'm currently in China, so logging in and uploading is difficult. I'll try to get more pictures up when I head back to the states

EDIT 2: I've finally been able to upload some process pictures!