Below is how I would tackle a repaint.
Get some red blush into the skin tone, it shouldn't be waxy and pale.
Blend in some red tints in the hair and paint some strands onto the face, this will help it lose the one piece helmet look.
Employ a little more profuse and strategic application of the sweat effect. It would naturally gather around areas above the top lip and nose etc.
Have the cuts run with the sweat. This may not be scene specific to the movie and becomes more idealistic, it does, however, bring some much needed realism to this piece.
Understandably, you shouldn't need to do any of this at this price point but like anything, some custom work can elevate an average piece into something much more remarkable.