You didn't follow the rules posted at the top of Beymarket.
"All sellers must post photos of their items with a visible copy of their username written/printed on a piece of paper to verify that they possess the item they are selling. Threads which do not have this will be closed."
While it is clear that you aren't selling a bey in this situation, the rules still apply. And yes, it's from a site that sells shirts of images you give them, so I realize that might not apply.
However, you don't actually have the rights from TT or Hasbro to make and sell this shirt. And this is not a design you made, this is a picture of Shu and Valt.
I'm closing this thread. Please don't do this again.
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Hey, parents! Here are all the answers to any questions about WBO Tournaments you might have! Thread-Guide-Hey-Parents-Answers-to-your-WBO-Tournament-questions
Please consult this guide linked below on how to arrive at tournaments before they start! https://worldbeyblade.org/Thread-How-to-arrive-at-tournaments-and-other-events-on-time