Position
Stand in a ready position with your feet about shoulder-width apart and your knees and hips slightly bent. Lean forward to align and keep your weight over your ankles. Place your arms straight down with your shoulders and wrists in neutral, and your elbows pointing back and slightly bent. Begin with your arms out to the side far enough so that there is some degree of gravitational pull on the dumbbells, providing a resistance.

Technique
Contract your middle deltoids. Begin pulling your arms out and up, keeping your hands relaxed and your elbows slightly bent. Pull your arms out until they are approximately parallel to the floor with your hands just in front of your shoulders. Hold and continue to contract your deltoids with your arms relaxed, your elbows pointed back, and your wrists in a neutral position. Slowly lower your arms back to their original start position, keeping tension on your middle deltoids. Repeat.