The design in my avatar is actually based off of a character of mine called Ven from a story I've been writing for some time. I'm not going to get into too many specifics about the story, but that design is on a featureless and smooth helm that fits tightly against his skull with no visible means of removing it. No seams between pieces, no nothing.
The helm itself is symbolic. The black side represents Ven's rigid commitment to his duties and some of the dark morally questionable things he has had to do as a result. The white side with the tear represents his own grief and sorrow for the sins that he has committed and how he cannot forgive himself for his past and the things he has done. The helm itself is a form of penance, a self-inflicted punishment for his past actions that he will not remove until he's finally learned to forgive himself for all of the dark deeds he has done in the name of a greater good.
