He Looks so cute and funny! Love it & I'd wear it! I like how you got the city in there and how he's holding one of the buildings. Check out my cute monsters t-shirt design, if you'd like! [link] And please vote!
Yeah! You did a such a detailed illustration, it's very neat and you picked up the right colours. Both, on white and black your t shirts look very good However, I'd wear the black t shirt: I'll vote for it.