For those of you just joining, I've been working on some helmets inspired by the Space Marines from the tabletop wargame called Warhammer 40,000

With the helpful assistance of two different types of primer, three different kinds of white paint, some chrome paint, a bottle of mustard (yes, mustard like you put on your sandwich), a little bit of gentle love from an airbush, and a few little details added in, it looked like so:

There's a metric butt-ton of pictures and a detailed description of the painting process after the jump.
Enjoy.