Creating a button with a custom image that expands as you type

 Hello. I am a newbie. I finished the Beginner Figma Design course. I know how to make a button that expands with the outline around it but I am trying to make one with a specific shape. I know I’m missing something. Please help! Please see below for screenshots and the link to the project Im working on if you need to see something there.  The more specific the better as I am still learning. TIA!

This is what happens:

I tried to reproduce the settings suggested in a different thread but I’m missing something:

The link to the thread I referenced: 

The link to the page I’m working on: