It's a lovely map - I've lifted it for a bandit camp I have to run in a couple of weeks.

The only thing I'd add to the comments above (other than that the water is clearly in the barrels!) is that many of the features are clearly the same image replicated - the tents in particular. It might be worth using a grunge brush to dirty them up a bit - bugbears and brigands aren't known for their cleanliness. That should make them look a little different. Maybe change the location and colour of the red flag(?) on the ridge-line as well. If it is a flag then the wind is blowing an all sorts of weird directions in this camp.

The ground is a bit uniform as well. Perhaps a quick dirty up with the grunge brushes would help here too?

These are small issues really. The map's lovely.