So I decided to scrap the original illustration that I was working on and went in a different direction. I decided to mix more a more traditional method with digital methods. I combined a scratch board I did of Freddie Mercury and digital painting techniques.
Since my environment doesn't really have a skybox, I went back and revisited the textures I originally made for the terrain and implemented them in unreal. I also spent more time playing with the caustics in the scene.