How to make a pinhole camera?

i did this in my photography cl!!! i brought in a medium sized tin and we painted it black (including insides and out) and drilled the tiniest hole on the curved surface of the tin. then we got some black duct tape and taped it over the pin hole, but so its easy to lift and put back down if you get what i mean. anyways, we bought some light sensitive paper and put it shiny side up inside of the tin facing the pinhole. so i went outside with my camera and took a photo of my friend just by lifting up the duct tape for 3 seconds (theres a whole lotta variables in order to figure out how long you need to leave it for). you see, the light sensitive paper is SUPER sensitive in light and sometimes even 3 seconds is too strong, and will leave you with nothing but slur of black and grey bit of paper. one time, we didnt do it for long enough and the paper was all white except for a tiny dot of grey in the middle which was the startings of the photograph. haha anyways we took it back to the dark room and since the dark is pretty dark except for these orange lights (that dont affect the light sensitive paper) we were able to take the paper out without harming it. when you first take out the paper, it comes out white but you have to dip it in some dangerous chemicals to get your picture :) haha hope this helped, i loved doing this ignment at school!