Remember to respect composition when drawing the background. A fibonacci or third-separated canvas can separate an aimless or orderly-ed chaos drawing!
It's perfectly fine to not jump straight to drawing each object, you can even represent your character as a block to check the perspective and size is correct!
To show spatial relation between object, you will need Cast shadows
Not technically backgrounds, but you can draw foregrounds, too!
Don't forget you can exaggerate object features to make your objects look more interesting.