I'd agree with Mouse about the trees on this one. They are really well placed, but just don't have the style match you're after.

Maybe there's some filter or some such you can play around with to give them more of the inked look? Might be worth a try before you even consider Mouse's daunting suggesting of redrawing them all. As ThomasR as often said, and I now thoroughly agree: sometimes I really hate trees...

Other than that, this has come on in leaps and bounds since I last had a chance to see! Great composition of all the different elements!