Why follow a course in Hairstyling for spectacles when one is already an experienced makeup artist ?
You will be able to find a job much easier when you are a makeup artist who is able to do hairstyles also. Many photographers prefer to work with a makeup artist that can style hair. You will be able to do your makeup and are not dependent of a hairstylist that may do the hair in a way you do not appreciate, or, you will be able to explain the hairstylist what you visualise for the hair. It is also well known in Paris, that if you work for a catalogue that may be shot in a foreign country, the art director will hire a makeup artist hairstylist. He will pay more for the services, since he will gain a flight ticket a hotel room etc.