The author remixed this model.
This is a make of d2000's remix of holdit's General Grievous (https://www.thingiverse.com/thing:619855) , so all the credits go to these guys. The only thing I did was use pieces of spray painted ropes and air hoses. The tusks (is that what they are, these pins next to the mouth?) were made of pieces of electric copper wire and some thinner wires soldered to them. The whole thing was spray painted with an air brush kit. I created a DXF file of the decals for the face and the breast. These were used to laser cut painters tape, which makes an excellent paint mask for air brushing.