If the picture is not straight you will need to correctly define the angle of the
image. Use the Crop
tool to frame the outline of the face with the arrow
pointing to the top of the head. Draw the rectangle round the face and drag the
corners with the mouse to rotate it. Use the guide in the upper right corner to see how to properly correct a tilted head.

Note: Each corner of the rectangle has a small square
round it. Click in the square, inside the rectangle to resize the rectangle.
Click the square outside the rectangle to rotate it. Click
and drag inside the rectangle to move it. Click and drag outside the
rectangle to redraw it.
When your face is properly framed with the rectangle, click the check mark
button. Click the abort
button to
abort.
Use the buttons on top to zoom and move the image.
Tip: Zooming during the fitting process is recommended to ensure a good fit for your facial image.
Use the buttons on the left-side toolbars to rotate or flip the image, or adjust the color balance or contrast settings.
When your image is properly edited, click the next
button
to proceed to the next stage, setting
the facial boundary.