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You don't need to be part of YPP to use custom thumbnails, you just need to have a verified YouTube account (http://youtube.com/verify ) – these are the steps to verify your account: https://goo.gl/3iMkBG https://twitter.com/Diane_Banks/status/953534796256378880 …
No, but you do need to be apart of the YPP to have your videos gain any traction because we all know without ad's playing on them YT won't push them forward.
If that's true how do these new channels blow up? Stay positive. You'll get there eventually. Keep grinding 
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