great
well i like the piece but i will offer some constrictive criticism.
first up, your dj looks fake, i mean, im a dj and i work with a few of them and they look nothing like this,
another thing you have to think about is how much is going on in your art, you cant have to much that keeps attention from what your trying to sell, be it a tv ad or billboard, you want to make it pop but at the same time get what your selling across.
i dont mean to nag, and i really like your piece, so, yeah, haha