For the next step I did some tests, painting several hairstyles and face caracteristics.
As you can read, the marks around the eyes will be the same color as the lightnings of Nariko, but at this point I haven't made my mind yet about the lightnings so I tried several colors.
(And as you can clearly see by the look of her neck and shoulders, my habits of drawing mostly male figures are not going away any time soon . But I think it will look good on a fighter !)
(By the way sorry about the possible english mistakes, I'm a french frog)