Back in the 1990s Harlequin Miniatures produced a licensed range of 28mm metal miniatures and one of the blisters I got was of the third Doctor. After affixing him to his base, I gave the model a white undercoat using Citadel Skull White Spray. I then added some green stuff to his base to fill the gaps. I also painted his face and hands using Citadel Elf Flesh.
I now need to check some source material before I start painting the velvet jacket.