Things to be noted:
(Source: http://www.parisciel.com/blog/en/tips-tricks-dressing-women-narrow-shoulders/#.VultDdJ95D8)
1. Wear necklines that elongate your narrow shoulders.
-Go for bateau, off-the-shoulders, square and wide V neck evening dresses or tops.
2. Wear wide shoulders straps.
3. Avoid necklines that highlight your narrow shoulders.
-Absolute no to narrow V-neck, halter and gathered necklines
4. Wear light colour tops and dark colour bottom.
5. Avoid tight fitting tops.
6. Wear puffy sleeves and set-in sleeves.
7. Avoid raglan sleeves, dolman sleeves and kimono sleeves.
raglan sleeve-
dol·man sleeve- a loose sleeve cut in one piece with the body of a garment.
8. Tops with light-coloured shoulder part