 In the early 1960s, he trained with Max Factor as a make-up artist, and went on to have clients including Lauren Bacall, Princess Anne, Princess Margaret and Princess Michael of Kent.In November 1980, Howard did the make-up for Lady Diana Spencer (and John Frieda did her hair) for the official portrait that was to appear alongside news of her engagement to Prince Charles.He went on to mentor Diana in how to use make-up, and in 1992 published "Look Like a Princess".