UPDATE
Tried some different color schemes out, want to try adding Foliage amongst his hair later and figured a moss green color for his hair would match his identity a little more?
Also added more humanoid looking eyes, but i'm on the fence with them atm. Not sure whether to make him seem like he could hold a conversation or keep it like before where he looked more like a puppet to power or something.
As @fantasymaster said I needed to add asymmetry to the horns, just some rough horn shape blobs atm but I think it works, May end up changing shape down the track but good to start cleaning them up now.
His lower half is going to get a bit work, proportions are a little off from top half now.