Ideal

• Muscle bellies are equally developed on both sides
• Muscle mass is even on both sides and displays the same curvature

You See

• Upper trapezius appears bulkier on one side
• Upper trapezius looks higher up on one side

Likely Cause

• This is dominant side (scapula likely to be lower)
• Scapula is depressed
• Upper trapezius is hypertrophied