This was one of the earliest things I did for Doctor Who magazine. Submitted in 2001, held in the Panini archive for a decade and recently returned to me along with a lot of other pieces. At the time I wasn't all that happy with it, but seeing it again I don't think it's too bad. The Gallifreyan guard looks a bit pants, and having done the ebook of Lungbarrow a few years later there are obviously some scale issues out of wack that weren't pointed out to me in the brief, but all in all it's ok.
I haven't toyed with it in anyway, this is scanned straight from the A3 painting warts and all. Medium - Gouache.