Don't release your quilt into someone else's care until you know you have good pictures. Make sure your pictures are successfully developed before you allow your quilt to leave your possession. A good picture will show the true colors, not too light or too dark. It will be sharp and clear. It will show the entire quilt.
Digital images are a nice back-up to traditional photographs.
If you have access to a digital camera, you will be able to instantly see what the finished picture will look like. You can then save that image or delete it and take another picture. If you need your pictures for display on a computer, many photo processors can now provide your pictures in digital format. You can also scan them yourself if you have access to a scanner. This option will give you the opportunity to adjust the exposure and coloring.