First of all save the image below to your documents. This is the clock base for your clock. The white rectangle in the center is where your clock will show up. Just edit around the white space only. Do Not edit inside of the white space, only the gray area. Basically you can border the white space or add image to the gray area. Whatever you want to do for your clock is up to you. For the rest of the gray area that you don't use just make it transparent.