There's a terrific "Death" (Neil Gaiman's character) by Alan Quah on DA that's just crying out for inking.
It'd be quite a challenge for you lot as well as Death's clothes and the background are going to take quite a bit of skill. (Not to mention colouring it as well!)
Hit his download for the larger size. That's the only size and resolution of it as far as I know, but you could always email/note him I suppose if you wanted to see if he had it any bigger. I think it's big enough to use decently as it is now though