Most websites have banners of some sort these days, or sometimes they are called covers and many things need to be taken into consideration when creating them not simply the size, which is very important…
With Facebook you have the size as well as everything else like where the profile picture is, page name, buttons, what happens when it is viewed on a mobile device…
So all though the banner looks plan to start with it is important to keep in mind what else is around it and why it is important not to just try to use the same banner for every where…
Below are so banners I have created recently for clients websites