Untitled Dalek Sketch 6
I think that's about it. Here's a slightly larger version.
As a last little touch I've added a rank insignia, which I didn't even know they had until I found this (I'm so glad someone out there obsesses over this stuff so I don't have to). I could work up a background but I'd never planned to and when you tack on a BG like that it will look tacked on.