I'd say find someone who has a similar face shape as yours and see how they have their bangs cut.  Here is a video on Best Haircuts for Your Face Shape.  Hope this helps!

I have a round face, and I personally don't think that any type of bangs are flattering on me. But the angled style may work well for you - I definitely would try that over a blunt-cut bangs style. Take some photos to your hairstylist and see what he or she suggests.