hi there dheun, i teach my couples this...the man's left arm is vertical, his hand is in line with his nose, his right hand is on the lady's back, just below her shoulder blade, fingertips touching her spine (fingers closed) the lady's right hand follows the shortest possible route to his left hand and her left hand rests lightly on his right arm(her hand at is shoulder). as far as posture goes... in ballroom, i suggest for beginners to keep their head,butt, and heels in one line. Both should pull up from the waist standing erect, the lady being slightly to the gent's right.