Follow the following steps to update your profile background image.
Visit Unsplash.com and search for your favorite image
You can search for terms like “color”, “nature”, “retro” or any other term you like. Once you have found the image click to download and make sure you select “Small” as the size option.
Visit your Dashboard “Edit Profile” page and upload the image. You can use the same cover for Freelancer profile and Employer profile.