proportion and scale

There is always a fine line between good and bad proportion.

In architecture, each element needs to be proportionate to the other. Windows are some of the vital aspects to creating good proportions. The windows on the house to the left are not on the same scale as the rest of the house. While the house on the right has windows that are proportional to the rest of the house. 

On the interior of the home, accessories also need to be proportionate. The size of the objects in the image to the left balance each other out, while the accessories on the right create an uneven balance. 

Scale also is depended on other objects. The door knob on the upper image is too small for the large door, and also puts the size into proportion. The viewer is able to see how big the door is because of the door knob. The mirror down below does not look as large as it is because the wall is so large.