An easy way to ruin the impact of an otherwise extraordinary picture is to post it on Facebook in the wrong orientation. Rather than enjoying the picture, your friends are left to scratch their heads, turn their computers sideways or just move on to the next picture. Don't worry; all is not lost. You can change the direction of your Facebook pictures even after you have posted them.
Log on to your Facebook account. You can only rotate or edit photos from the account that was used to post them.
Navigate to the photo you wish to turn. If you posted it recently, you may be able to find it on your wall. If not, click the "Photos" link on your profile page and find it from there.
Click the photo in question to view the larger version. Look in the lower right corner of the black section surrounding the photo. You should see two icons, each a rectangle with an arrow. The left icon rotates the picture left, while the right icon rotates it to the right.
Click on the appropriate icon to rotate your picture until it faces your desired direction. Facebook saves your changes automatically.