I'm loving the design! Really sweet and baddass at once. I did notice, however, that your pose and composition for the illustration are a little bit similar to your entry for last Art War. I can't help but think maybe trying to push one or both of those aspects just a little bit to fit this new character more could turn something generally appealing into something truly outstanding.
I didn't make the connection until these last two updates, fwiw, so it might be something to do with the direction you're taking when rendering it out.