Six ways to create the illusion of space

Linear perspective

By using either one point perspective, two Perspective, or three point perspective (Birdseye view and worm's eye view) an artist can create the illusion of space. When your perspective is a drawing method that uses lines to draw objects in space

Placement

Generally, objects that are positioned lower on the picture will appear closer than objects that are positioned higher on the picture plane.

Detail

Objects that are closer appear more detailed than objects further away

Color and a value

Objects that are closer to a viewer appear darker in value and warmer in color. Objects that are further away appear lighter in value and cooler in color.

Size or scale

Objects that are closer to a viewer appear larger than objects that are further off in the distance. Scale reference to the size of an object ( a whole) in relationship to another object (another whole).

Overlapping

When one object covers part of the second object, the first seems to be closer to the viewer.