Canvaからバナーの編集が可能です。

https://www.canva.com/design/DAFwWuROA-k/XLbeFT_8vbz0oZ0S1kNTRQ/view?utm_content=DAFwWuROA-k&utm_campaign=designshare&utm_medium=link&utm_source=publishsharelink&mode=preview

https://www.canva.com/design/DAF45ZuwAvE/JnNMGxng0e_J7Bx-TMKtFA/view?utm_content=DAF45ZuwAvE&utm_campaign=designshare&utm_medium=link&utm_source=publishsharelink&mode=preview

Canvaの編集方法については こちら