I know there are some problem areas for some of us..mine is my neck because of sol the different hair patterns and the hills and Valleys..


stick to cheeks first..I know you want to be perfect add you have said but really just pick that areas and really get it down pat..when it comes to your jaw line and chin tilt your head more along with the pulling of skin..the more flat areas the better.
I know it is tough but remember it takes months and i am not trying to sound terrible but it is the truth...more tilting and more stretching where you can..
And patience....
Good luck man