Basic tint application technique:
Apply color from roots to ends. Imagine your head in two sections from
crown to front of your forehead is one and from crown to back of your
neck is another. Now divide each section in two down the middle.
Start on one side of a front section finish that and go to the other
side, than one section on the back than the other.
Chose a shade from the manufacture that seems suitable to your hair.
For best results stick with one to two shades lighter or darker from
your natural hair color.