In case you don't have Photoshop, you can download it link
Now that you have Photoshop, we can get started. First you need to click File--->New---> width 800, height 100 pixels. Then you click Ok and you have a background.
Now you click File--->Open and you select a litrato you want to open. Then you crop and resize it. I usually choose 110 or 120 height. Now right click on little window and ilipat to new window. Now your image is in new window and you...