To change the banner image on your Twitter account, the first thing you’ll need to do is log in to Twitter. From here, you’ll want to click on your profile image and click view profile. Then in the center box right here underneath the banner image, click edit profile.
This will allow you to change your banner photo and profile photo. To change the banner photo, all you need to do is click on the image; you can remove or upload a photo.
Once you’ve grabbed your new photo, click open, and you’ll be able to reposition it. Once you’re done, go ahead and click save changes, and that’s how you update the banner image on your Twitter account.