Task: Open the Gmail App, Click on the Star icon to Unstar the Artsticker Mail. 
Steps:
Open the Gmail app
Swipe up to see the Artsticker mail  
Swipe up to see the Artsticker mail  
Swipe up to see the Artsticker mail  
Swipe up to see the Artsticker mail  
Swipe up to see the Artsticker mail  
Swipe up to see the Artsticker mail  
Click on the Starred Icon to unstar the Artsticker mail