To shape a goatee, let some facial hair grow for a few days, use a trimming tool to make clean jawline corners, shave and style the goatee with shaving oil, and use a nose hair trimmer to shape the edges. Do not extend the outer edges past your smile lines.
A goatee should complement your facial features and hairstyle. Before styling the goatee, allow facial hair to grow for a few days to determine the style that suits you. Move the razor or clippers in all directions to catch stray hairs. Get rid of stubble to avoid a messy look. Wash the goatee thoroughly after styling to remove trapped shaving oil.