Creature lighting and rendering

Trying to match feature film cgi creature work quality. This 3D render title is "Arrival". (Click on image for full size view) I used Maya and ZBrush and here are some 3D renders I used as reference (trolls, goblins, giants etc):

(Dobby character from "Harry Potter" franchise)  - (Click on image for full size view)

(Trolls characters from "The Hobbit") - (Click on image for full size view)

(Trolls characters from "Jack the Giant Slayer")  - (Click on image for full size view)