Charlotte if you want to know how to do it it's easy: put your camera on a tripod, take say 5 images with yourself in different places, be careful not to move the camera or change settings, then open the first image in Photoshop, create a new layer, open the 2nd image and cut & paste it into the new layer, create a 2nd layer, paste the 3rd picture into it, repeat until all the pictures are on different layers, then use the eraser tool to rub out the bits on each layer that are of no use if you see what I mean.. just play with it!