Hi Itari --
I actually think your face shape is oblong vs round...longer than it is wide, with a lovely curve at the bottom. At any rate, I don't see round at all!
You mentioned in another thread that your hair felt thick and heavy no matter what you did. As someone with thick, coarse and wavy hair I can tell you that when mine feels that way it is time for a "de-bulking" visit (regardless of whether I chop the length). Getting a simple straight across trim does nothing.
[And for me it really it needs to happen every 8 weeks.]
Unless you want to fight your natural texture -- some do -- my #1 piece of advice re hairstyles is to work with what you have.
In addition to "thick and heavy," I don't know if you have wavy hair? You mentioned past bang issues, which makes me suspicious, ha. The current length will really pull out any wave, but you could shower and pluck a wet hair and if it's bendy like an "S" there's your answer.
Of course a stylist should be able to help identify what you're working with!
The whole hair length thing is so personal I won't go there. Like the many other posters above, I *will* ditto recommendations to explore face-framing layers that transition to longer hair.
Especially if your hair has any wave, this will give you so much more bounce and movement. I've had everything from a pixie to below-bra band hair, and it hair went from looking "thick" to having defined waves once it hit my shoulders...who knew?
And not to harp but *if* your hair waves, this will (IMO) make traditional bangs a pain unless you are committed to a flat iron and avoid humidity.
Given what you report, I think styles like the below are apt to work better on you...but again, talk to a stylist about your hair's nature texture/wave pattern.
Jessica Alba: http://hair.lovetoknow.com/ima.....hair_2.jpg
Jennifer Aniston: http://www.hairboutique.com/tips/tip18017.htm (scroll down to see her hair when it was your current length vs her usual style)
Penelope Cruz: http://www.gallery.becomegorge.....e-586.html
If your town has a beauty school that may be better than going to a super-inexpensive salon. Ask around for recommendations, too; these days a lot of stylists are cutting at home to make extra money and their rates for that are lower than their salon rates.