If you decide to present a visualization with characters, cars and a crowded at all, you need to make it believable. In professional visualizations, characters are used who do something and follow the purpose of the building, or highlight the purpose of the surrounding space. It is also necessary to pay attention to their placement and the position of the image. Here they are more for determining the scale, but they do not give a story or an impression, so it would be better to delete them or place them completely differently. To determine the scale, it might be better to put a well-known element close to the camera and then closer to the building, a bench may be perfect. The one on one side of the road, the bus stop on the other side, will serve as a sizing.