If you move the paper-clip away from the paper fastener, the circuit will be broken and the electricity will stop. The switch is off and the light will go out.

The light you've made works perfectly well, but it's not very practical. You can use it as a torch, for example, but it's difficult to carry around easily, the light doesn't 'point' in any particular direction, and if it rains, your electrical circuit could become very dangerous. It's also a funny shape, and could easily get damaged in your bag.

Can you think how to solve each of these problems?