If you're in the mood for a new hairstyle but not sure where to start, a tried-and-tested formula is working out which cuts suit your face shape. It's a good idea to know which styles work well with your angles and which don't as it can be the difference between a winning style and a look falling flat. When hair stylist to the stars and John Frieda International Creative Consultant, Harry Josh, was in town recently for the launch of Precision Foam Colour ($22.99) we asked him to decode which styles work best for which face shape. Get ideas for square, round and long faces now.