Private Eye Design

I wanted to work out the design for the Private Eye in my forthcoming illustration before I dug into it, so here he is. I was looking to do something that was sleek and relatively simple, without too much extraneous information. He'd have an even simpler silhouette if I had stuck with just a suit like I had originally planned, but come on, he's a noir-styled P.I.! He needs a trench coat. :)