Unless you're a super fan of the series, unfortunately none of those thumbs are all that clickable because it gives zero indication of what's going to be seen in the video. Using the cover art and then slapping on "part 1" or "part 2" is pretty boring in terms of thumbnails. You want to convey what's going to happen in the video that's a key moment worth clicking. There's a million "hitman part 7" thumbnails. why should someone click your part 7 instead of some other channel's part 7 thumbnail?
From what I've read, the clearer and less cluttered the better. So, my question is would these thumbnails make you click on my video? If no, why not? I'd love some feedback. Cheers
GotchaThey look good. Though I think adding a bit more bright images or text would make your thumbnails stand out more. You don't want to keep them too dark.