Flattering Your Face

I've posted links to blogs that have talked about choosing hats that flatter your face, in the past.  Those have all been aimed a. at hats, b. at situations where you have hair coming out as well, and c. at a general audience.

I'd like to think about similar considerations for scarves.  What face shapes are best suited by building up height or by high or low buns?  Do layers of scarves draw attention in one direction or another that might interact with emphasizing different parts of your face?  What about creating dangling tails or a more tailored look, bringing the eye up?  How do all these things interact?  What impact do accessories have?

The problem is, I don't really understand this business of face shape, in its complexities.  So it's hard for me to think about what sorts of things flatter what face shapes.  So I'm hoping to start experimenting on my friends (and any other volunteers), to start forming some ideas.

In the meantime, any thoughts you, my dear readers, might have would be very welcome.  What styles suit your face, and what don't?  Do you sometimes choose a "less flattering" style because you just like it, or because it sends the right social message, or because it's comfortable, or for some other reason?