You can't always judge a book by its cover, but you can judge a social media profile by its cover image. In this column, you’ll learn how to make your own cover images for Facebook, Twitter, Google+, and LinkedIn, in a variety of software. You'll also learn design ideas, correct sizes, and sage file format advice. This is your chance to get creative and let your personality shine—after all, an image is worth a thousand words! click here to read the full story on Macworld.com