Step 3: You can edit the following: Logo URL, Website, Facebook, Twitter, Github, Telegram, Reddit, and Launchpad description. Some important notes regarding these sections: Logo URL must end with a supported image extension: png, jpg, jpeg, or gif.
Example: Logo and website URLs are sections, they cannot be empty.
Step 4: Click “Save” once you are done editing. MetaMask will now ask you to confirm the transaction. It will also show you the fee you pay for that transaction. If you agree, click the “Confirm” button to finish the process.