The back cover of a funeral order of service is where to place any wording about donations, words of thanks and where the wake is being held after the service.
Usually once you have these in place there is space left over to allow for one or maybe two photos. Depending on the quality of the pictures carful consideration should be given to the size of the images. Too big and they can quickly loose clarity when printed, remember photos look much better on a backlit screen than they will once printed.
Sometimes it's better to go for smaller with a better print quality than to go large and risk a poor looking print. On the plus side smaller images allow for you to have more which can really enhance the look of the order of service back cover.
Remember, little additional touches can make a big difference, like a small bunch of flowers or a logo for the team they supported. Again in most cases we find that a simple coloured border can finish it off nicely.