I like V2, but with the two compositional elements switched. The dinosaur is too cool to hang out in the bottom corner, but the text underneath it detracts from the illustration. I do however, like the text layout for the simple leaf.
i am torn. i hate, i mean absolutley hate shirts with a message. especially one that is spelled out in text beneath the image, an opposed to inherent in the image. In fact i dislike text on shirts in general. i've seen a million shirts (like printed ones in stores) that i would love and wear constantly if not for their little message or punch line in courier new. But on the other hand. i love dinosaurs. especially blocky iconic ones that operate sans outline. And yours is bad ass. like entirely bad ass. so to be short. drop the damed text.
About my design
all comments are great. thank you