The thumbnail fits very well with the rest of the videos already on Ken's channel, so changing it drastically might hurt performance from consistent viewers. Because of that, you should take whatever advice I give with a grain of salt. - The first thing that you need to consider is the intent behind the video, are you trying to cultivate a sense of trust towards Ken from the viewer, or are you more so trying to get them interested in the actual numbers and information within the video? If it's the prior, I think putting Ken's face as a prominent portion of the thumbnail is the right call. However, if it's the latter you could instead have the main focus of the picture being a background of one of his more impressive properties. - I believe you had the right idea in wanting a background, but you should stick more with single-shot pictures. It is far easier to take one picture as a background and build off of it to make it look good than it is to make your background from scratch with multiple pictures. - I have noticed that the best practice with text in thumbnails is to have an idea of what you want to write, but to put it in at the same time as any "image props" such as that graph line. I like this approach since text is especially useful for filling up negative space, but you also need to shape it around both the background and added "image props". For this particular thumbnail, I would have personally made the text slightly smaller so I could move it down to both fill up more space nearer the bottom and to get the text in a more central position. - Do not disregard font, you should scroll and see all the options given to you, and potentially even look at some third-party options to find what you really like. It is best to have only a few fonts you use in your thumbnails so as to create a sense of familiarity with your persistent watchers, but that just makes the fonts you use all the more important. - The coloring of text is a part of thumbnail creation I still do not understand as much as I would like to, but you could consider turning the BILLION from yellow to red for a pop as well as to really direct focus. However, that might only work since the background is currently only white with bars.