If you’re looking to change your Instagram video thumbnail, there are a few things you can do. First, make sure that your account is set up to allow for thumbnail changes. If not, you can set up a new account and then change your thumbnail. Second, make sure that your account is using the correct dimensions for thumbnail images. Third, make sure that the image is of good quality and has no errors. Finally, if you have any questions or want help changing your Instagram video thumbnail, please reach out to us at support@instagram.com.