I think it would be hard to earn a Bitcoin from creating memes since most of the people will just enjoy it and won't bother sending you a tip for it wherein they can enjoy it without sending any money or tips.
Perhaps having an option to allow users to offer some of their photos in a subscription-based style might do the trick.
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Yes, I am actually working on something similar to OnlyFans/Patreon where you first have to unlock content to see it. I will update the thread once it's ready.