Greater Daemon of Slaanesh: Keeper of Secrets.
The body is based on the original GW model. The face is a variation of things. The general idea is the straps on the face cover it's true identity, hence the Keeper of Secrets fluff. Most conversions I've seen are female, so I thought I'd try a male version of sorts.
What do you think so far? I'm working on a vector of the face to clarify the scheme a little. Should be up tomorrow. I'm also working on a Halloween banner for the site. Pics up soon :)