Your client brings a photo of a look. Cut their hair to match it, one lock at a time. It only gets shorter!
Rex
Cut each lock at its ring. Scissors snip where you cross a lock. Gold ring = still too long, green = spot on.
Clippers buzz everything they touch down short. Narrow or wide head.
Comb locks that point at you so you can reach them, and turn the chair for the sides and back.
Too deep can't grow back. Keep it even left and right, then press Done. 90 seconds.