Thanks for the feedback guys!
Here's a new update, this time, not all about the skull!
I added some of the details to the chest chassis:
After some sanding:
I built some details on the back chassis:
I started sculpting the elbow joint in the upper arms:
I created a deeper hole in the skull where I will place the pour hole once I create the mold.
The silicone will create a wall inside the skull that will help prevent the resin to run out of the mold when I rotocast it.
And here's the final major procedure I have left as far as the skull goes:
I decided that I want to shorten the Maxilla (distance from nose to mouth) as I feel the teeth are too far down.
So I'll cut the gum of where the line is drawn, grind it down a bit, then put it back on:
Bear with me, the skull is ALMOST done!