I used painting canvas and cardboard as materials to create the switch/sensor and it turns on the light bulb when you press it hard and turns off when you release you finger. I sewed on the edges of canvas to close it, with a cardboard and copper tape inside. And for the new skill, I practiced on sewing. In the beginning I found that it is hard to find a hole to pierce through but as I was getting more familiar with the technique, I get used to it by pushing the needle harder.