If I'm lucky enough to be a part of this, I'll try to give a detailed description....
Surely I cannot assume you've been a Star Wars geek your entire life (like I have) and that maybe some help would be nice, maybe a picture would be nice?
http://www.iamfrancis.com/Paintings_finished_001_02.htm
http://www.iamfrancis.com/Paintings_finished_001_01.htm
is a good URL for an example of somthing I'd like, (Not so large ofcourse, and not quite so demanding in contrast of all the other interesting characters out here.
(Maybe a bit more rounded of a head, this seems to portray a cylindrical figure for a head)
This too seems to be quite nice and almost in a sence of how I would like to be depicted
http://www.lacripta.it/images/disegni/dom-jedi_dark.jpg
also
http://mojoart.mixnmojo.com/fan-art/_art...-jedi.html
Now, I'm not saying a copy, nor perfection (especially because there is no REAL thing to base this off of) and I don't want to put you in a situation where you think you're copying somebody's work. As an artist, I'm sure you've got great talent, and understanding of what you yourself consider your own work.
Honestly, a slight creative combination of the three pictures presented could be almost exactly what I'd be looking for.
I'm sorry if I was vague, and if need be, i'd be more than glad to "elaborate, and give detail" more than just pictures, but hey
"A picture is worth a thousand words" so whats 4 pictures?