Because the shoulders are the broadest point on your body, choose tops that draw the eye inward to create the illusion of a narrower shoulder line.
Sleeveless tops can achieve this as they visually cut off the eye before it reaches the shoulder. If you prefer to cover up your arms, try a more fitted sleeve that does not add more width across the shoulders. Turtlenecks and mock necks are also flattering as they visually draw the eye inward towards the neck.
Keep clothes on the top half of the body fairly simple by avoiding elements such as oversized prints or ruffles. Stick with solid colors and clean lines.
Your body type has narrower hips, so look for pieces that emphasize the bottom half of your body to create more symmetry with broader shoulders.
Flared pieces like full skirts, wide leg pants, culottes, pockets, etc. will flatter and balance out your proportions. Fabrics that have structure and are a bit thicker in weight will help to create some volume on your bottom half.