What are some good ways for a relatively new DE shaver like me to begin to successfully shave ATG for closer passes? I have been warned about attempting ATG shaves too early in my shaving career, and of course I must admit I have tried it (resulting in irritation). How should I start to to ATG passes with proper technique? What kind of pressure and angles are proper? What won't take the skin off my face? Any help would be greatly appreciated!