Should I trademark my Tshirt design?

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2. #legal
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4. #brand
5. #available
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7. #start
8. #protect
9. #necessary
10. #trademarks
11. #early
12. #business
13. #funds
14. #copyright
15. #trademark
16. #should
17. #shirt
18. #protection
19. #about
20. #stress