When lighting skin, there’s one rule I go by: I light it brightly.
This student on my college course looks great and pretty:
But look what happens when I light her up 1.66 extra stops:
Her skin looks even better.
So when I use flash, I expose 1-2 stops over normal, by using flash exposure compensation when using TTL flash, or by increasing flash power, or by simply exposing more when using available light. You will see a lot of high-key images in my work:
Those are from a shoot I did today. One on camera flash, manual, 1/4 power, camera on 400 ISO, 1/125 sec, f/5. And one flash on my left, set at 1/32 power, aimed direct at the subject through a 1/4″ Honl photo grid.
Can you seen the effect of the individual flashes, and of exposing so brightly?