One photo fix that makes a big difference, yet is often overlooked is brightness and contrast. Most often helpful for rescueing a photo that may seem hopelessly just out of focus Adjusting Contrast can also bring a great photo up a level:
Before Brightness/Contrast Adjustment
Adjusting the Brightness/Contrast often removes some color from the picture, so after adjusting the contrast, take a look at the Hue setting. In Corel Paintshop Pro the adjustment can be made by accessing the Adjustment/Brightness and Contrast and Adjustment/Hue and Saturation menus.