Here’s a quick update. Just PS changes. More contrast a small angled brush stroke layer in there to make it more illustrative. Tweaked colors. More dramatic. Digging Z-Brush again…
nice lighting. you need to fix the hair.
thats very good.
Yes indeed, the last one does the trick 
I love the shading you achive in ZBrush. Not just this picture.
The model looks great, but as a few other’s might have said, the hair shading is a little wonky… you should texture the suit too, even though it’s just hinted at.It looks painted on as opposed to being actual cloth(super spandex or whatever…)
good job mate
brojay
Love the head modelling! You can see the work you’ve put into studying the anatomy, the folds and muscles are beautiful.
As it’s Superman, perhaps his chin is a bit wide, and the lower cheek (labial?) muscle near the mouth is showing too much fatty tissue. Superman can’t have any sag in his cheeks (even though the rest of us do!
)
Great work though, I just love the stern, almost arrogant expression!