This dragon head is part of an ongoing robotics project.
I suspect it might be useful to others, so I'm uploading it separately.
Moreover, it's also great to showcase the results.

There are LED light holes behind the eyes, so they can emit light.

There are three M5 holes at the bottom of the dragon head for installing the bracket, and there are also four M2 holes inside the dragon head for installing the camera.

The teeth partially blocked the camera's view, but it wasn't a serious problem.
The list of pictures shows the degree of occlusion.

The LED lights are installed at the top of the dragon's head and fixed with contact adhesive.
Two LEDs are connected in series with a 50-ohm resistor, and are connected in parallel between the ground and 3V pins of the Pi.

Use the M2 shaft to connect the different parts of the dragon head.

Except for the eyes, the outside of the dragon's head was coated with several layers of Humbrol primer, and then enamel paint was applied. The eyes were coated with varnish, and then the pupils were painted on them.