One of the salient features of Mesopotamian art was their so called "artisitic iconography" and this meant that they made statues of gods or people in different sizes that reflected their importance and value. The larger the statue, the more important the figure. So in a group of smaller statues that were worshipped in homes or in temples, the important gods would be largest and the worshippers would in fact be relatively small.
These objects were not thought of the same way that we we think of art but they were viewed as functional in that worshipping them would provide benefits for the worshipper.
One particular feature of many Mesopotamian statues was the very large eyes that were important in helping the people consider them as live or sentient stand-ins for either gods or people that had died.