I'll take the risk of looking stupid and say that I don't quite understand how this relates to the derby theme of "beginning". Personally, I think it would fit better with the theme of the "cabin fever" derby.
It also seems very similar to other shirts out there that illustrate the whole "there's all this stuff in my head just dying to get out" idea. I'm sorry if that's not what you were going for, but that's what I see when I look at it.
Besides that, I won't be voting for/buying this shirt because I just don't wear black shirts. Nothing against you for that one, it's just my thing.