Stand with a wide stance, secure a light band underneath the foot opposite to your working arm. Extend your arm in front of you, your hand starts in front of the same side hip. Take any slack out of the band, so that it is about hip height to start.
Keeping the arm straight, wrist neutral. Engage your lat and flex your shoulder to raise the band in line with the opposite leg.
Keep your shoulder depressed, don't allow it to shrug upward.
Pause at the top, with your arm forming a straight line with the opposite leg.
Wrist in line with the shoulder.
Lower slowly with control. Repeat for repetitions.