That's neat, but personally I think having the teeth white doesn't work as well as it should because I keep seeing this in my head:
Why has it taken so long for me to realize the headscult is an homage to AOE Grimlock? Great job, by the way. Simple but effective
? It's not AoE Grimlock. It's IDW Grimlock, but with the forehead detail spiked up into a bit of a "crown". Good job on the stickers. I'll agree though that it might look better in a darker colour, to better match the source material, instead of making him look like a Ninja Turtle.