How to change twitter username

Step by Step to Change your Twitter Page Username

1. Click on the more button from the navigation bar.
2. Click on Settings and privacy.
3. Click on Your account.
4. Click on Account information.
5. You will be prompted to type in your Twitter account password to confirm it’s you.
6. Under Account information, update the username currently listed in the Username field. If the username is taken, you’ll be prompted to choose another one.
7. Click the Save button.

How to change twitter username | Credit by: Twitter