Nice work!! How did you make the scene dark?
If you make an Animation Set of your camera, you can lower the ToneMap to get a darker light in your scene. What I forgot to do way back when I made this is level out a few things in my light itself, which makes the polygons poke out a little more than I want 'em to. Add a black vignette post-Photoshop and bam, the final product.