Repeat the process gradually trimming down the longer top hair till it blends in with the shorter clipped hair.
For this haircut, you will need a pair of sharp scissors, a comb, a sprayer bottle and, of course, a pair of clippers with safety guards.
If you're cutting hair for the first time, I would recommend starting off with a number 4 guard.
Start from the nape of the neck and work your way up to the occipital bone or the line where the head begins to curve.
Use a scooping motion to pull the clippers away.
Don't forget to clean up any stray hairs on the neck below the hairline.