Stand tall with a neutral spine and your feet hip width apart. Hold a dumbbell in each hand with an overhand grip. Your arms should be by your sides with your palms facing in. This is your start position. Brace your core, keep a neutral spine and look straight ahead as you extend your arms out to your sides and guide the weight up. Be sure to maintain a slight bend in your elbows at all times. Exhale as you do so. Your arms should come to parallel with the floor. Pause, then slowly lower the weight back to the start position, inhaling as you do so. Repeat for te required number of reps (or time).

Lateral raises build the side delts that give your shoulders shape, and they respond well to small, steady load increases. More on strength training that actually progresses.