Take a stance with feet at shoulderwidth. Grab the rope attachment, step back from the pulley, bend slightly forwards and flex your arms at theelbows to about 80 degrees. Keep your elbows close to your torso.
Do the extension from the starting position (contracting your triceps), fully stretching your arms along your body. Wrists are firms throughout the entire motion. Inhale while returning to the starting position in the same way. Exhale along with the extension. Keep your torso in a fixed position throughout the entire motion. Do the required number of repetitions.
Keep your torso straight and do not bend at the waist. Keep your elbows in a fixed position without excessive sideways movement throughout the entire motion.
Choose an appropriate resistance to start with to master the technique well. If possible, exercise in front of a mirror to get the correct starting position and watch the entire motion.