Placeit offers you this FREE channel banner template for Twitch. You can easily adapt this overlay for Twitch as you want. You can adapt the colors of the on-screen elements. You can customize the handles of your social media accounts. It will just take you a few minutes to create a great visual. Then you can easily download the final visual for free and use it as an overlay for streaming in your favourite live streaming software (e.g. Streamlabs OBS).