You can customize your 1Rink account by adding a profile picture to it.  To do this, click on the three-line menu button in the top left corner of 1Rink:

In the menu, click on “Account Settings” to open your account settings options:

Lastly, click on Choose File to open the image selection menu where you can choose where you would like to get your new profile picture from:

Please note: It might take a little while for your new profile picture to appear.