I think the red eyes are gonna work really well making him look dangerous,
Would be good to find reference to work with at this stage of composition:https://m.media-amazon.com/images/M/MV5BMWE1MGIyODItYzI3MC00Y2MzLWE4MjItZTE0MWQyOWNjYTE4XkEyXkFqcGdeQXVyMzM4MjM0Nzg@.V1UY1200_CR109,0,630,1200_AL_.jpg
https://www.watson.ch/imgdb/9c61/Qx,E,0,35,1126,765,501,333,200,133/40308823961388