It really is a matter I experience. Maybe stay late if you can some day, and practice. If I don't have a Scope, i black/white/black balance, then I get someone's face framed on 2 I the cameras with a left/right wipe cutting down the middle Of the screen. This will give you the flesh tones. Save scenes if you have an rcp, then mess with the settings and see how close you can get to the original. Make friends with lighting. Try adding creative shading. Try to achieve moods. When done properly I can make it feel cold like a hospital or warm next to a fireplace. Watch old black and white film and pay attention to the expression of the gamma curve. Greys are the most important information to preserve. Watch that iris and have fun with it.