If you are planning to do commercial printing, there are some designing tips that you need to remember.
The first thing that you need to look at is to decide the type of images that you can put in your color copy. If you are scanning the images on your own from photographs, it is better to save them in JEF or EPS formats as they help in preserving the sharpness and color of your pictures to the maximum. The GIF and JPG versions compress the color and pixel resolution, which might lead to blurriness and color shifts. As GIF
and JPG are common image formats online, it is not recommended merely to lift an image from a website and use it in your layout. Notice that 55printing.com is temporarely using 55postcardprinting.com as main domain.