1. Follow the steps to act as your Facebook page
2. Roll your cursor over the camera icon on your current cover photo
3. Click "Change Cover"
4. Choose the option where you'd like to obtain the photo for your cover photo
5. Select the photo you'd like to use
4a. "Choose from Photos" will take you to the photos you've already uploaded to your Facebook page and you can select one of those
4b. "Upload Photo" will let you select a photo that you have saved to your device
6. Click and drag the photo to change its position
7. IMPORTANT: Click save changes!