The above milk weed and the below all are represented as beauty of nature... I would say the nature never need additional facial expression, because nature is always giving good to us, in the same those who were giving or helping to others were doesn't need any additional facial things because already they are looking good from the heart.
<a href="//commons.wikimedia.org/w/index.php?title=User:Lokesh_Mylari&amp;action=edit&amp;redlink=1" class="new" title="User:Lokesh Mylari (page does not exist)">Lokesh Mylari</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>