Post a picture in a note, press the image, long press on the image and copy URL. Go to edit profile, paste into banner URL field and press save ✌🏻

Reminds me of reddit

#nostr #asknostr nostr:note16gcz6kpruxyql4ader0g6pdmh2375hrjcxn47dsqmzlrelweanvqg8c5qx