There is this brain-label on the bottle. It looks weird, because the colours aren't so smooth and there is no shading at all, unlike on the rest of the picture. At first I had difficulties to see what it was supposed to be. Furthermore it looks like it is glued on the picture, being in an imaginary and external foreground. Even though it actually is the most frontal thing of the image, it looks out of place.
Another thing I realised just now: you use this fancy flaming effect on the letters, glasses and bottle; why not on the hoverboard trail (which is actually a flaming thing)? It could add movement and excitement to your picture, and your guy is surely making a rad hoverboard jump in that particular moment. ;)
Everything looks great, except the label on the bottle :/
I ceased to work on animation, cause of lack of time, 2 months is deadline. That was the main reason. In the end i think we will end up with non animated start screen, so it turned out for good :P. But what you said about label is true, i'll work some more on it. Cheers!