Tai Chi is based on correct posture and proper alignment to make the best use of your whole body.
everydaytaichi by lucy has developed "key words" that she uses to call out as the movements are done
Cross Hands
After the intermediate closure
Right hand on the bottom
Pressure from the right to the left wrist
Rotate wrists
Push out
Shoulder width away
Separate
Bring it across
Bring it down
Exhale on the down movement
Right hand on the bottom
Pressure from the right to the left wrist
Rotate wrists
Push out
Shoulder width away
Separate
Bring it across
Bring it down
Exhale on the down movement