I know people that do concept art for Ensemble Studios, and, this would look like a masterpiece.
I read this and thought to myself, "How could a successful company possibly make concept art even less clear than this and still do a good job?" That's when I decided to Google "Ensemble Studios concept art".
These are links to the roughest concept art I found in the image search:
[link][link]. Frankly, Skippy, I think you've got it all wrong. Even their rough stuff looks pretty great.
I'm not going to comment on the actual quality of
your work, though. I think my opinion would be awfully biased since I have no taste for Halo fan-art. However, the concept itself is terrible in my opinion. Most people could probably look at this and think of at least four/five similar alien creatures from television or movies or video games.