In the graphics I've provided I like the way the gorilla's fist is punching out in an exaggerated way so try to work with that.
It would be great if you could add couple of "splashes" like the ones in thumbnail.jpg across the design background, preferably in a green colour.
The design os going to be printed on to an energy drink can so it must fit the format and resolution guidlines specified in the template pdf I have provided.
The target demographic for this is a young audience, 18-35, male and female, and the market will be predominantly bars/nightclubs so it has to look cool and stylish. I know thats pretty vague, sorry, but basically I don't want a lame cartoon character like Toucan Sam or the Coco Pops monkey.
And also keep in mind that this is an energy drink and gorillas are the most powerful creatures in the jubgle so the design has to communicate a few key messages: powerful, dynamic, strong, fearless, etc