I just cut a piece of cardboard the same size as the piece of glass, and tape pictures to it. I find something I like, (a rock wall for instance), and take five verticle pictures overlapping the edges. Line the shot up in the middle, and move two frames to the left and then start taking pictures, (you might want to start with six shots until you get the hang of it). I then print them on my printer on regular paper, cut the edges off, then line them up on the board before taping. I guess you can do the same with pictures from magazines, internet, etc...