Profile Picture

To change the profile picture, open System Preferences > Users and Groups. Then, select your user in the sidebar and press the profile picture, so you will be able to change it

Two ways to customize your Profile picture for your user account

1) You can simply drag an image file of your choosing onto the picture itself in system preferences > accounts > user

2) You can add an image file to the default folder where user account pictures are stored : /library/user pictures

A few notes on the second option. The /library folder is hidden by default. To access it through finder click shift + command + g and enter the path /Library/User Pictures in the pop up window.

System Preferences - Users & Groups - click the current profile image - click 'recents' in the sidebar & drag an image to the grid... or click 'camera' in the sidebar & take a new one.

Select unwanted ones & press delete or edit menu - cut to remove them.

Use the edit button by 'cancel' to zoom in/out & move the visible area of your chosen image.