I noticed a big difference when I stopped being my own worst enemy. I listened to what multiple senior members where saying. Tried to incorporate the correct pressure,prep,and passes. Then wow ah ha moments. Time frame 3 weeks to 3 months, but there are still places on my face that I feel could use improvement. My wife says I am insane an she cant see what I am talking about. But when you feel your face and stroke it from every angle and its BBS then you know , this is why I picked this way of life. Its not one single element but a combination of multiple factors when I see and feel the best I can be today. Always looking for a way to improve and get better. And then You gotta ask yourself are you over analyzing perfection.