Amazing works! Can hardly decide, which I like most. But if I had to, I'd probably would go with this version:
As I prefer dark colored t-shirs, it would probably look best on them.
Just one tip: It's a bit confusing to label those "creative commons" without adding a specific license. Are those CC0 or CC-BY or some other license?
ooo I forgot have to edit :) thank you for mentioning as for the final piece I think I like this one most too :)