A view of a futuristic city with a bridge and a bridge

Help me draw a sci-fi painting，The theme is science and environmental protection，The whole painting uses the starry sky as the background，At the bottom is the Earth，Tall buildings can be seen on Earth、All sorts of garbage，Including hazardous waste、Food waste、Other garbage and recyclables。Above the earth,In space there is a huge space junk power station，The power station is divided into three levels: upper, middle and lower，At the bottom are various pipes，Same with all kinds of garbage，Used for garbage collection；The middle tier is used for garbage disposal，There will be all sorts of small robots、Smart devices do all kinds of garbage disposal and conversion，The upper floor is a waste-to-energy station，and the middle tier are connected by conversion devices，It is used to convert treated garbage into electricity。Waste-to-energy stations will and the earth、Other planets and spaceships、moons、Spaceships and so on are connected，to supply power。This painting is a second-grade elementary school work，The painting style is simple，Works A2 paper size，hand painted style，Don't get too complicated，Reflect the characteristics of children's painting