Wash and dry your beard
Comb the goatee hair downward
Decide the goatee shape you want
Trim the sides first to define the outline
Trim the mustache to match the goatee length
Use a trimmer with a longer guard to reduce bulk
Switch to a shorter guard for final shaping
Clean up the cheek lines
Clean up the neck line
Trim the chin area evenly
Check both sides for symmetry
Use scissors for stray hairs
Shave outside the goatee shape
Recheck the length in good lighting
Finish with beard oil or balm