Mapping Out

The image above is a potential Map out for where all my main buildings are possibly going to be. When looking into Overwatch Maps, i noticed they are fairly symmetrical when it comes to their layout, with a control point in the centre. This is my block out so I can stick to this layout when adding in my main buildings for the scene. In the gaps I would like to add plenty of things to fill up the scene such as rubbish and nature and extra buildings, cars etc so it doesn't look so empty and looks like there is life in the scene.