Photos are already taken in a way that emphasize your features and minimize the need of post processing.
In any case each image will be processed in every single detail, contrast optimised and colour balanced.
Of each processed image you will get two versions: a colour one and a black and white one. And the colour to black and white conversion will be done with the maximum control of tones and constrast.
I've been using Photoshop since the early 90ties , and i know deeply the processing techniques that are needed.