You need to see the outline
of your face. So, if
necessary, wet your hair and slick it back from your face. (Or you
could use a hair styling product, or hair clips, or a hair band).
If you're using a camera, take a photo of your
face (or have someone else take it): look straight at the camera and
let your face relax; do not smile as this changes your face shape. The
most important thing is that the photo is taken straight on to your
face and not too close to it. The aim is to get an accurate,
undistorted, picture of the outline of your face.