If you want to define and build your shoulders, then you need to add a set of front raises to your workout.
Get two dumbbells
Stand with your feet together, arms straight and rest the dumbbells against your thighs
Keeping your arms straight raise the dumbbells up, out and in-front of you until they reach shoulder height
Do not go higher than your shoulders
Repeat 8 – 10 times for 5 sets.
Do these immediately after finishing 8 -10 reps of lateral raises