Normally, new members are not allowed to put in commercial links, especially for their own items. That is why both your threads were sent by the system automatically for moderation.
However, as you have previously introduced yourself and your pets and are a genuine member of the forum, I have an exception (just this once!). I have moved your thread to the marketplace section of the forum, where it seems more appropriate. I have deleted your other duplicate thread (which I assume you created because you did not know that it had not appeared because of compulsory moderation of commercial links).
Good luck with your tee shirt!