Use this link as a source in OBS or Streamlabs ( https:// )
Create banner in our banner maker, upload it somewhere (imgur.com), then place it by direct url here. Or use your own banner.
You can place your own images into some widgets. Upload them before on any site, for example on imgur.com. Then copy it`s direct link (with .jpg at the end) and place to special field. How to get direct image link.