If you were chosen to make a food menu what image would you choose for a meal to be displayed, this one:
Or this one:
If you chose the second one I have some bad news for you, maybe you should look elsewhere for something to do because this isn't working out as planned for you. If you chose the first one then good, that's what you shoud choose if you want to get attention. Lately I started seeing thumbnails like this on Steem
Same color choice, same font, same size.
It looks like those thumbnails on youtube in pure white and black that everyone skips except for Casey Neistat, because they look cool when he uses them.
And hey I get it on YouTube after hundreds of millions upon millions of videos accumulating for years they are doomed to eventually get very bland and similar, but this is a new network so please have some originality and put in some effort into making a good thumbnail of there won't be a chance that your post will stand up between dozens of posts trough which your potential reader scrools.