Making Map Art

Upload your image to discord and then left click on the image and press: Open Original. Copy the link that gets opened.

NOTE: If you want this to be only available to you, then upload it to a private DM group or a private server.

Go to Minecraft and get a map.

Make sure you have the map in your inventory before running this command.

Run the command:
/map create <your_url>

Congrats! Now you have a custom map!