To print on shirts, you'll need either vector art, or 300dpi artwork somewhere in the 5000x5000 resolution.. Some place can print it as-is, but others will require individual graphics of each color.. Also, gradients are TOUGH to screen print.. I do have a place (bookmarked somewhere) that will print as-is as long as its 300dpi and high res with no limit on how few (or many) you want done..

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Friendship is like peeing your pants.. Everybody can see it, but only you can feel the warmth..