Well, you used two brand trademarks on a product you were selling (to yourself, but still). Brand/copyright lawyers really hate it when people do that stuff and CafePress is notorious for sending all of the products made on their site to folks who make their money litigating anything remotely brand-infringing. I got cease-and-desisted last year for trying to make a shirt with a raven on it and some vaguely medieval font, with some lawyer saying I was infringing on Game of Thrones trademarks.
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