OHNO- i was gonna comment that there was a site reselling your overwatch art D: it seems its from the SAME creator as the guy below, cause the "christas-treeshop" is the twitter account being used to promote the same site
https://99teesgear.com/limited-edition-2353?s=hanes-5250&c=Black&p=FRONT
Hello, in case you didn’t see I’ll also post here; some jackass is trying to print shirts with your art. You can file a copyright claim with the website they’re selling from (2nd link).
https://christmas-treeshop.com/limited-edition-2353?s=hanes-5250&c=Black&p=FRONT