There are a few things you can do to help preserve high-quality photos in Picasa. First, make sure that your camera is set to “RAW” mode. This will allow you to capture all of the data that your camera captures, including color and noise. Second, make sure that you have a good photo editing program installed on your computer. This will allow you to change the colors and brightness of your photos, as well as add effects such as blur or highlights. Finally, be sure to keep your photos safe and secure by storing them on a hard drive or online storage service.