How to tell what face 'shape' you have?

Im trying to figure out what face shape i have and am pretty clueless... (dumb much? lol)! Is it supposed to be obvious???

I have long hair atm and have an appointment booked tomorrow to get the 'chop' but im not 100% sure what i want...

Mine is definitely Mrs Potato Head.

Advice anyone???

Most of people have not only one kind of face shape, they are mixed up of at least 2 face shapes normally. I can`t see your photo but the important step is to pull all of your hair back off. Then you can focus on outline of your face, the lines, angles and curves. Maybe you can follow to this article Tutorials on face shapes quiz. There is also a particular category of face shapes which might do you some help.