In the future, it’s wiser to ask for a critique before you submit, that way you can get some feedback that may help you improve the design before it’s already up for voting. I think the design is fine though, good luck.
it’s my first join DBH :D
Yeah, I think this looks good. I’d just say maybe make the tshirt color gray so that you can use the shirt color as part of the design and reduce the amount of in on the shirt. As a tshirt designer, i try to keep the process in which the shirt will actually be printed in mind, as well.