Do you have a side reference to go along with the front?

If not you might want to find matching front and side views for a first time head modelling project.

If you can't find a matching set on the net then get a cheap digital camera and find a volenteer and make your own.

Be sure to set the camera's zoom if it has one to maximum and get far away from the subject to minimize perspective errors. Also, have the model stay seated and focused straight ahead on some target then move the camera to get the side shot. Use a tripod and try to maintain the same distance from the subject for both front and side shots.

Good luck.