Awesome stuff. My little tip from Minecraft that I'm sure can be carried over into Rising World would be to focus on one building at a time while allowing the roads to flow with your construction. Try & plot ahead by even considering adding hedges (when the updates allow) to line the road. Trees also. Other than that, nice stuff.
My more casual suggestion would be to try and make 'colourful' buildings by going white & a bright colour. Adding colour would add some form of beauty to the city other than the grey.