I wanted to create a question on how to create notification icons for an app. Then answer it. 

I will be answering the following questions that I feel need to be grouped together in one explanation rather than spread across the inter web. 

**FIRST** 

What is a small icon in notification.builder? 

**SECOND**

What is a large icon in notification.builder?

**THIRD** 

How do I make a small, large icon for notifications?