I like this on the blue, but I don't think the writing should take center stage quite so much. It's kind of big and dominating, and most people can tell it's a carnival. I like that style of writing though, maybe incorporate it into a sign at the carnival or something?
Black is definately the better of the three, when it is spread over the entire width of the shirt. Mabey see what it is like without the CARNIVAL sign at the bottom, just an idea. Still a fantastic design though 5$
one of my most favorite places on earth.