Similar to the Highlighting tab, the Shadows tab is used to improve the effects of an image. If you enjoy having realistic shadows from certain parts of your picture then follow this guide. First things first, please open up Google Picasa and wait for it to load. Once it’s all loaded up, you will see all of your images. Just like the Highlighting tutorial, you will browse through all of your images, but we will only show you how to create shadows on one image, but you may do more than one if you would like.
Once you have found the image you want to add shadows to, double click it please. After a few moments, depending on how fast your computer is, a new window will pop up. This is once again the “Basic Fixes” window. Over to the left of the screen will be all of the options in which you can choose to improve your photos, you will want to click the tuning button, which will open up more options for you to choose from. Under the Fill Light and Highlights sliders will be the Shadows slider; this will simply increase the detail of the areas with darker shades of color.
Some images have a bit too much in them, so it’s important to remove some of the more uninteresting features of the picture. Picasa does a great job in editing pretty much all images, but like anything else, it takes perfection and precision to make things the exact way you want them. Once you have figured out all of the options in Picasa that will improve your image, they will turn out just like professionally taken photos. I wouldn’t be surprised if many professional artists used this software actually. Good luck.