How to Customize WordPress Prompt Thumbnail?

Are you satisfied with the WordPress “prompt thumbnail” screenshot? Is it possible to customize the thumbnail? Should our branding be represented?

Steam Dreams — Dronstad & Steam Bot & SKI TRIP

Testing the reblog feature. I learned that I can’t reblog unless I’m doing this on the business plan using the Share feature on the reader! Read more about reblogs and my particular issue. In spite of the seriousness of the situation, I forced to stifle my anger and found a workout. Thank you Dronstad for writing and publishing Steam Dreams! It was a pleasure drawing for your story. Side note, did you know that I went skiing this weekend? Wait, I’ll discuss that later. I want to show you some cool pictures of the Steam Dreams!