Key Points:

In both shoots, the model is facing the window directly and for BOTH shoots there are black v-flats on either side of her.
Buy upholstery velvet NOT crushed
The velvet will not allow any light in so your backdrop will be pure black
The black v-flats will allow more light in so that you have more light hitting it than with the velvet
The tight crop, top of the head to just about the nipple line, slightly off-centered is a gorgeous Vogue style shot that you should have in your portfolio. Show the shoulders only enough to hint that they are there and make sure she stays square on to you.
Your light meter will get confused because of all of the black and give you an incorrect reading, so make sure you shoot two stops under.
Every time you change the backdrop or their outfit, make sure to get 5-10 amazing shots. Don’t overdo each sequence. Once you get the shots, move on.
When you need inspiration, don’t be afraid to google Vogue portraits.
Watch the retouching video with this series to see how I retouch, enhance contrast, extend backgrounds, and edit to black and white for these shoots.