To change your profile photo / icon / avatar:
- Tap your profile icon
- Tap gear icon
- Tap Account Settings
- Tap on your profile photo, select a new photo and press the back arrow to save.
Note: If you signed up for Seesaw using your Google Account, you must change your profile icon/photo with Google directly. https://support.google.com/plus/answer/1355890?hl=en