Sprite Advert

My idea is to design a poster similar to the sprite advert above.  With this, I will think about using my own photography, having bottled water rather than sprite.  As the sprite bottle is seen as a gun on the first poster and a weapon on the second, this will resemble life in my poster as the water will be a weapon also.  Im thinking of doing a water effect for the text to emphazie the meaning.
http://www.folioart.co.uk/images/uploads/Emme_Srite-1-l.jpg
http://www.folioart.co.uk/images/uploads/Emme_Sprite-2-l.jpg