u/Hefty_Coconut2903

Hello everyone, I've recently been working on customizing the Gigantic Thrashers Suchomimus, and in the end I ended up with 2 head pieces. My plan is to add articulation similar to the HC Concavenator, where the 2 head pieces can be moved independently, as well as sculpting 2 neck pieces so it can have a wide range of motion. The issue now is what do I need to do to add said articulation to the head?
Any suggestions are gladly welcome!