Paint skeme help,HALO crossover figure

Posted in Custom Workstation

hers a quickly photo shopped concept image.

>>>should I sculpt a mouth under the visor?/skintone
>>>what coloration choices could make this better?(real paint)
BASE figure:

I decided to make a corssover figure between halo and dragon ball....
I decided to use Saiya-man as inspiration,*gohan's disguise during the buu saga*
and halo 3 security figure.
but I have some color/design things im not sure about.what kind of cross over weapon should it have?
I was thinking a riffle inspired by dbz king's guards, *painted shotgun*