Get a quality clipper set with guards, a trimmer, a mirror, and a comb
Wash and dry your hair before cutting
Decide where you want the fade to start
Choose your longest guard for the top sides
Use the longest guard to remove bulk around the sides and back
Switch to a shorter guard and cut lower on the sides
Use an even shorter guard near the bottom
Open the lever for softer blending if your clippers have one
Close the lever for a tighter cut near the neckline and around the ears
Use the corners of the blade to blend lines between guard lengths
Work in small sections and check both sides often
Taper around the ears carefully
Clean up the neckline with a trimmer
Use a handheld mirror to inspect the back
Make small corrections until the fade looks even
Brush away loose hair and wash your hair after finishing