Dis what I meant by helmet, I meant adding more futuristic helmet feats

Cool

put some light shading (lighter color gradient) on the edge of his head

simply put

head = ( o,o)

you place the gradient on the brackets, which in this case, the edge of the head

OR

you can pull a jackfly shading, by placing the darker color on the outer, and light on the inner

(( o,o)