1. A tessellation is a four photos merged together to made a dial like photo. 2. What you do to make a tessellation is you have to take a interesting photo first. Once you have taken your photo you have to upload your photo to the computer using the memory card from your camera. Then upload your photos to photoshop and begin the process of cutting out a piece of the photo in a pie shape crop and flip it either horizontally or vertically to create the dial. 3.