As mentioned in a previous post, I wanted to put lots of insignias all over him and I feel like I got about as many as I could without making him appear overly cluttered. There's even another "secret message" one on his left shoulder that I'll leave mysterious. Insignias still feel like something I'm struggling with, but the practice is good for me and it is slowly getting easier to tackle freehand tasks. There are a few tricks I've picked up from various places that have definitely helped reduce my frustration.
One last note is his pose. I specifically turned his left arm upwards to get him away from "DJ mode" and more into a "High-5" pose. I have a habit of giving my models a high-5 in the middle of a game when they pull off something amazing and I'm hoping Thunderhead will deserve many high-5's.