Earth Hourglass

I have chosen Earth Hour campaign for my assignment. My artwork was actually inspired by Earth hour's poster which is using light bulb to remind people to not waste any electricity.
From there, I try to add on some elements to enhance the meaning, so i have decided to combine light bulb and hourglass. There is a cork at the center and also water dripping from the top to represent the amount of time left before global warming have reached a serious degree. The girl portrayed on the top represent human, to show that we still have chance to make a change.