Some interesting examples of the impact of colour and cut using J Crew shirts.
Colour and pattern can be used to emphasise or hide your top half:
Sleeve length is important. Cap sleeves always make your shoulders look bigger:
The longer sleeve takes the focus away from the chest:
Bigger, round necklines make shoulders look smaller:
These shirts are perfect – great colour, neckline, sleeve length:
Even better are collared shirts and knits: