Good start. Use shading and shadows for 3d effect, select textures appropriate to the scale of the render (driveway, stone materials), reduce tiling on the roof, accessorize the yards and street (plants, people, light poles, mail boxes, etc.), make windows look like glass (color, reflection, transparency, back drop). Consider lower eye view perspective using background photo, and perhaps some foreground.
Even when you think you know what to do
its not always easy when first learning to utilize a new media. The first time I did it, I spent a whole day making a 2d person from a photo.

