Framing your image:
Simply hold down your mouse button in the middle of the framing square and drag until it is centered over your face, then release.
Drag any side of the square to make the frame surround just your face.
(NOTE: Frame has a preset minimum size.)
Click on the "Done" button.
Hint: Framing just your face (or area of interest in Secondary photos) creates nice images that people can easily see in search results.