I would recommend placing an Elemental Beast Jaw piece behind the head, and raising the shoulders up a little bit at the same time, in order to get it closer to the original, along with switching a lot of the silver pieces out with darker ones, like Gunmetal or Black. Otherwise, this looks really good! Edit: Maybe also switch out the silver Skull Spider mask with either a mask from Umarak the Hunter, or the version of Onua's mask that was released with Quake Beast. In short, something Black and Green, yet shorter.