Ok well im sure everyone is different but what I do is this
apply rigid collodion first obviously, wait to dry then now im ading some liquid latex directly around the collodion to give raised effect and sealing the colodion as to not let it peel off as easily throughout the night
then i apply the white with a sponge by tapping all over BUT not around the lower sockets of eyes or where the scars are, Leave that flesh tone for now. ALSO Raise your eyebrows and squint constantly while applying the white as to not get as much in your natural wrinkles on forehead and around eyes and mouth/nose
Then i do the eyes filling in the basic part, then using a dull toothpick, i pull away some of the black down the sides of eyes and few places down cheek, BUT NOT SO FAR DOWN.
Then the scars/mouth with a deep dark application of red on the mouth and inner area of scars then with a smaller sponge i dab here and there around the scars, and since i didnt put any white near scars its not going to be PINK, then just use another dull toothpick and pull some red up your natural laugh lines from the scars
Now grunge it up a bit and dig out some nice wrinkle lines if squinting didnt get the job done
And dont forget to white your ears.
hope that helps ya