What is the proper technique to doing cable flies

Hello my name is Brad Smith. I am a big fan of your videos. I like the fact that you go beyond just saying do it like this. You explain in detail the reasons for doing it. I have been lifting weights for the past 13 years. And as I progress I found I like to lift very strict and controled. I try my best to perform exercises properly. But the one that still has me a little stumped is the cable fly crossover. The way that I do them is setting the cable hight to my shoulders, taking one step ahead with my right leg, leaning ahead slightly, and while keeping my arms bent at a fixed angle, I cross my hands one over the other infront of my chest. Alternating left and right crossover. So my question is, am I doing it right? There are so many things I dont know. Is my cable hight right? Is my body possition right? Should I be crossing my hands one over the other? And where should I be feeling the greatest contraction from? Have you ever made a video or could you make a video on the proper way of performing the cable fly crossover? Thank you for your time in this.