While I agree. Sometimes what you think is an attractive thumbnail doesn't work with an audience and vice versa. Keep in mind your audience will tell you the thumbnails they like in your analytics
Oh boy do I know this one from experience.
We as creators are biased, we always think what we are creating is amazing, and sometimes it isn't
On the flipside, thumbnails that I think look horrible, have performed surprisingly well. So it's definitely the audience that decides. Interestingly enough it also defys my graphic design learnings. What works well for YouTube, isn't what is always taught in graphic design school. I'd say it's more like discount brochures. Discount brochures (I used to work in marketing for a discount store) go against good design practices and tend to go for impact, rather than beauty, and that impact sells. I've noticed impactful "ugly" (in my opinion) thumbnails tend to get the click. It's really about testing what works, learning for the right target audience and media source... a tabloid celebrity magazine is designed differantly to a wedding magazine, just like what works for packaging of a pack of chips, is differant to what works for the packaging of perfume.
From a graphic design standpoint it's very interesting. YouTube and custom thumbnails came out AFTER I finished my graphic design course, so what I learned for traditional print media and packaging, didn't work the same way for thumbnails.
@Its Jonny Keeley. Off topic, but curious as to why you edit in 1080p? I very recently got a 4k camera but haven't edited my first video with it, yet. Is there an advantage to keeping 1080?
Shooting in 4k, but editing for 1080p generally means you have double the pixel quality to work with. If I'm filming in 1080p, and I want to zoom in, on 1080p footage, that footage is going to get blurrier or pixelated (I do this all the time in my own videos) but when you film in 4k, if you're working to a 1080p frame, using 4k means when it's shrunk to 1080p, there's more pixels to condense down meaning the quality will be better, but also, if you zoom in on 4k, the quality won't degrade as much because it has double the amount of pixels to work with (I've studied this extensively over the years)
my drawing app "films" in 4k, so I generally edit it in 4k. on my 1080p screen I don't notice any quality differance, but if I had a 4k screen, and I was editing to a 4k frame using 4k footage, if I zoom in, it's still going to pixelate slightly as zooming expands out those pixels.
Hope that makes sense