I really like it, BUT I have a question. The design is just on the front of the shirt correct? Wouldn't this make the picture end rather abruptly? Also, I'd think that the design on the sleeves would lay rather awkwardly.
I would suggest fading the picture out into blank on the sides, unless you were able to print on the back too.
I don' t think it would look strange on the sleeves. It would be understood. Also, you could take out the background and have just white or another colour instead of the shading
About my design