The instructions suggest "drybrushing" the skull for better effect. Has anyone done this, or can anyone describe how to try? I'm really not in love with the pure white look out of the package. Thanks.

 

http://www.tfw2005.com/boards/tutor...ring-aging-your-figures-dry-brush-washes.html

...and Jin Saotome has a useful turotial on his site:

Basic Guide to Painting Transformers Figures

 

I'm in the process of doing this now, and I used a skull-shade color (a yellowed white color) from the Citadel line to good effect. If you used a bright white with a dark base coat it would look OK - just more like a ghost, and less like a skull.

 

I thought about doing this type color instead of black. Then I started wondering how a light gray would look. It all depends if you want the skull having a more realistic, or more cartoonish look.