Your YouTube background cover gives you an opportunity to promote your business or any other information you want people to notice about your profile. You have a slim heading banner which is enough to advertise your website or messages you want to promote.
Your cover is very easy to change you simply login to your YouTube account, and click in the top right corner (where you profile picture is) and select “My Channel”. Then you hover over the heading banner picture which you are going to change. Click on the pencil edit symbol. Select “Edit Channel Art” and upload your picture and save it.