Did some Photoshop planning for this guy.
If you have an idea and want to visualize it before working on it, it's useful to make a composition and colour sketch.
You don't need to have Photoshop for this, you can just use paper and colours or even a smartphone App(I sometimes use Infinite Painter, I'll put the link down below).
https://play.google.com/store/apps/details?id=com.brakefield.painter&hl=it&gl=US