How would I ask for a fade haircut plus a little bit off the top in chinese? In the US I usually ask for the following:

A #2 (top) to #1 (bottom) fade on the sides and neck

The neckline grows way too low so I ask them to cut that to a certain length

Half an inch off the top

Cut the sideburns to a certain point

I really don't know how to ask for this in China, and I searched online and the answers are rather inconsistent. Any ideas?
"The neckline grows way too low so I ask them to cut that to a certain
  length",


Try 把后面的头发往上剪 or 把后面的头发往上剃一些


  Cut the sideburns to a certain point


Try 把鬓角往上剃一些.