Gather clippers, scissors, comb, mirror, cape or towel, and a spray bottle
Wash and dry your hair before trimming
Decide how much length to remove
Start with a longer guard or small cuts first
Trim the sides and back evenly
Use the comb to lift hair and cut small sections on top
Blend shorter and longer areas carefully
Check both sides in the mirror often
Trim around the neckline and ears slowly
Clean up stray hairs with scissors or trimmers
Cut less than you think you need
Recheck under different lighting
Finish by washing off loose hair and styling as usual