6th July 2011: Progress so far OK, so I've discovered I already own grey trousers and a grey shirt. This helps a lot. Wig has arrived from China and is with my GF who is styling the fringe.
I've generated but not printed the name badge. And the Derpymail patch will be tacked to the back of my shirt.
I now need to decide what to do about a cutie mark (if anything), and whether the cap needs a badge.