Here is the first of the "How To" vids I started to work on that detail how I made my LEGO Optimus Prime.
This shows the parts you need for the head and how they all go together.
I only have a handful of these vids done, so I will post what I have. After that it may take some time to record the rest.
After watching the video again, I realize why I never published it! I promised there would be a part list attached at the end of the video and I guess I never got around to it. Some to add to the "To Do" list...