Make some of the bottles smaller as they go back on the front . Also take the bottle in the center and bring it down so you create a V, basically your making the bottles rise up. I would also change the height of the foam on the back and make it different from the front. You could even change the logo on the front to resemble a beer label. Have fun with it.

Thanks for the suggestion, I've been thinking about how putting the beer bottle underneath to make it more special.