Cheers, yes just painted on. I'd be too scared to sculpt on top of a finished figure for fear of mucking it up.
@ Bookman, unfortunately, there are no more fliers planned at the moment, unless I can find some more suitable figs. He's a one of a kind, worst luck.
EDIT:
These were suggested on another thread, Westwind bobbies:

Swap their heads for the Empress miniatures ones, and give them weapons more fitting and this might be a goer. Hmmm, now where can I get some loose Victorian weapons? Anyone any ideas?
