I think you did a grand job on his coat! I mean, I can understand as I have a similar thing with regeneration figures, if your displaying by story they're essential but they always seemed a bit, useless, exactly why I dismantled my regen Tom, and especially for those that don't have a later 5. And as DW said, directed precise weathering's very difficult on a mass production scale, unfortunately it's the reason why we'd never see a Troughton TARDIS/early Pertwee - but it's close enough for me:
Minus the blood for a few reasons. It's interesting, as the mud on the TARDIS doesn't bother me at all, but I can certainly understand and definitely a hundred percent respect why people would take the opposite view.. it's interesting.., if they made Colin's or Hartnell's with snow, I'd be against it and would remove it, but sand's as easily passable mentally to me as mud and gravel. I would happen to guess that's it's an effort on Al's behalf to make valid variants where possible, i.e. if and when they make McCoy's and Colin's, they're pretty identical, so getting something a bit different out is a nice tactic both to actually seem like your not just buying the same thing over and over, and to give each one a bit of character lined up.