Change your Apple ID photo on iCloud.com
Your Apple ID photo appears on your iCloud.com homepage. You can change it at any time.
On iCloud.com, tap your Apple ID photo or
in the top-right corner of the window, then tap iCloud Settings.Tap Change Apple ID Photo, tap “Browse your device for a new image,” then follow the onscreen instructions.
To change other settings related to your Apple ID, go to the Apple ID account website.