Its not just the color or pattern of a top or blouse, it is how it is going to fit on you.
When looking for just that right blouse or top, consider the shape of your face.
If your face is round go for a scoop or V neck top that will help elongate your face.
A longer face shape can be balanced by higher necklines such as a turtle neck.
Square face shapes are better accented with ruffled neck tops to define and add softness to the chin and jaw.