Start by sitting on a bench with one elbow resting on the same leg. The other arm should be between your legs and not resting against the other leg. Slowly grasp the weight and raise the weight while turning your pinky finger inward to your shoulder. If it is done properly your back should be stationary. Lower the weight to the starting position.
A spotter can be used for motivation since the participant can use his/her other hand to spot themselves.