Pinhole photography is done by using a can or anything that is suitable to take these kinds of pictures (a can is ideal), poke a hole in through the middle of the can, put tape over it when you are done poking the hole. After that, you are in the darkroom. Stick a test strip into the can, making sure it lines up with the hole on the other side. Take the can outside, or where there is a sufficient amount of light. Make test strips to tell the length of the exposure. When you have the time, then make that bigger photo!