Thanks guys, I value the feedback. Alfar, the wonkiness comes from carving the roads, and cleaning it up is going to take ages...but I'll give it a go. I'm just slapping down the buildings for the moment.

Gand, I took a closer look at the drop shadow, I think I'll use it selectively later on for taller buildings. (might work..will try) but everything drop shadowed shows up building overlaps which you can't see without it.

The vegetation is a brush which comes with Drawplus...definitely looks big though (might be the drop shadow I've added to it) - thanks, I'll play around with it.